--- _id: '63099' abstract: - lang: eng text: 'Spray-induced gene silencing (SIGS) employing double-stranded RNA (dsRNA) offers a promising, species-specific approach for protecting crops from insect pests such as the cabbage stem flea beetle (Psylliodes chrysocephala). However, the environmental instability of dsRNA presents a major limitation to its field application. In this study, we evaluate two distinct dsRNA formulation strategies for improved stability and delivery: a bottom-up approach using chitosan-based interpolyelectrolyte complexes (IPEC) and a top-down approach employing functionalized mesoporous silica carriers (SBA-15). Both systems were comprehensively characterized in terms of size, surface potential, porosity, and release behavior. The results revealed that IPECs exhibited release kinetics that were approximately one order of magnitude faster than those of SBA-15 across all tested conditions. The two formulations significantly improved dsRNA stability against UV and heat exposure compared to free dsRNA. In feeding assays with P. chrysocephala, both carriers achieved comparable gene silencing efficacy, though dsRNA@IPEC induced more immediate effects, while dsRNA@SBA-15 displayed delayed but ultimately stronger reduction in consumed leaf area, consistent with its slower release kinetics. We demonstrate that despite structural and mechanistic differences, both delivery platforms effectively stabilized and delivered dsRNA, and offered distinct advantages depending on application needs. This work highlights how formulation strategies are key to successful SIGS and supports the development of robust, field-adaptable formulation technologies for sustainable pest management.' article_number: '149697' article_type: original author: - first_name: Benjamin W. full_name: Moorlach, Benjamin W. last_name: Moorlach - first_name: Robert full_name: Epkenhans, Robert last_name: Epkenhans - first_name: Di full_name: Ju, Di last_name: Ju - first_name: Banuja full_name: Ravidas, Banuja last_name: Ravidas - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 - first_name: Judith full_name: Buente, Judith last_name: Buente - first_name: Maik full_name: Gaerner, Maik last_name: Gaerner - first_name: Martin full_name: Wortmann, Martin last_name: Wortmann - first_name: Stefan full_name: Scholten, Stefan last_name: Scholten - first_name: Michael full_name: Rostas, Michael last_name: Rostas - first_name: Waldemar full_name: Keil, Waldemar last_name: Keil - first_name: Anant V. full_name: Patel, Anant V. last_name: Patel citation: ama: Moorlach BW, Epkenhans R, Ju D, et al. DsRNA-based carriers with pH-tuneable release kinetics for effective control of Psylliodes chrysocephala. International Journal of Biological Macromolecules. 2026;338. doi:10.1016/j.ijbiomac.2025.149697 apa: Moorlach, B. W., Epkenhans, R., Ju, D., Ravidas, B., Weinberger, C., Tiemann, M., Buente, J., Gaerner, M., Wortmann, M., Scholten, S., Rostas, M., Keil, W., & Patel, A. V. (2026). DsRNA-based carriers with pH-tuneable release kinetics for effective control of Psylliodes chrysocephala. International Journal of Biological Macromolecules, 338, Article 149697. https://doi.org/10.1016/j.ijbiomac.2025.149697 bibtex: '@article{Moorlach_Epkenhans_Ju_Ravidas_Weinberger_Tiemann_Buente_Gaerner_Wortmann_Scholten_et al._2026, title={DsRNA-based carriers with pH-tuneable release kinetics for effective control of Psylliodes chrysocephala}, volume={338}, DOI={10.1016/j.ijbiomac.2025.149697}, number={149697}, journal={International Journal of Biological Macromolecules}, publisher={Elsevier BV}, author={Moorlach, Benjamin W. and Epkenhans, Robert and Ju, Di and Ravidas, Banuja and Weinberger, Christian and Tiemann, Michael and Buente, Judith and Gaerner, Maik and Wortmann, Martin and Scholten, Stefan and et al.}, year={2026} }' chicago: Moorlach, Benjamin W., Robert Epkenhans, Di Ju, Banuja Ravidas, Christian Weinberger, Michael Tiemann, Judith Buente, et al. “DsRNA-Based Carriers with PH-Tuneable Release Kinetics for Effective Control of Psylliodes Chrysocephala.” International Journal of Biological Macromolecules 338 (2026). https://doi.org/10.1016/j.ijbiomac.2025.149697. ieee: 'B. W. Moorlach et al., “DsRNA-based carriers with pH-tuneable release kinetics for effective control of Psylliodes chrysocephala,” International Journal of Biological Macromolecules, vol. 338, Art. no. 149697, 2026, doi: 10.1016/j.ijbiomac.2025.149697.' mla: Moorlach, Benjamin W., et al. “DsRNA-Based Carriers with PH-Tuneable Release Kinetics for Effective Control of Psylliodes Chrysocephala.” International Journal of Biological Macromolecules, vol. 338, 149697, Elsevier BV, 2026, doi:10.1016/j.ijbiomac.2025.149697. short: B.W. Moorlach, R. Epkenhans, D. Ju, B. Ravidas, C. Weinberger, M. Tiemann, J. Buente, M. Gaerner, M. Wortmann, S. Scholten, M. Rostas, W. Keil, A.V. Patel, International Journal of Biological Macromolecules 338 (2026). date_created: 2025-12-15T09:54:41Z date_updated: 2025-12-17T07:27:57Z department: - _id: '35' - _id: '2' - _id: '307' doi: 10.1016/j.ijbiomac.2025.149697 intvolume: ' 338' language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: International Journal of Biological Macromolecules publication_identifier: issn: - 0141-8130 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: DsRNA-based carriers with pH-tuneable release kinetics for effective control of Psylliodes chrysocephala type: journal_article user_id: '23547' volume: 338 year: '2026' ... --- _id: '65270' abstract: - lang: eng text: 'In perovskite solar cells (PSCs), electron transport layers (ETLs) play an important role in the selection and transport of electrons. Understanding the properties of these layers in relation to device performance is essential for optimizing solar cell efficiency and enabling their integration into emerging architectures, such as flexible solar cells. Here, we deposited TiO2 at different thicknesses using atomic layer deposition (ALD), a technique well-suited for producing uniform and pinhole-free films. The crystal structure of the layers was controlled by depositing the films at three different temperatures: 150 °C, 250 °C, and 350 °C. The layers were characterized in detail to determine the morphology (by atomic force microscopy), surface composition (by X-ray photoelectron spectroscopy) and the crystal structure (by X-ray diffraction). The TiO2 layers were then incorporated as ETLs in planar perovskite solar cells to evaluate their influence on device performance. Higher deposition temperatures led to improvements in device fill factor and open-circuit voltage, leading to more efficient solar cells. Notably, the best device performance for the ALD-TiO2 layers was achieved with films deposited at 250 °C.' article_type: original author: - first_name: Syeda full_name: Qudsia, Syeda last_name: Qudsia - first_name: Alexander full_name: Weiss, Alexander last_name: Weiss - first_name: Saara full_name: Sirkiä, Saara last_name: Sirkiä - first_name: Fuzeng full_name: Wang, Fuzeng last_name: Wang - first_name: Emil full_name: Rosqvist, Emil last_name: Rosqvist - first_name: Teresa De full_name: Los Arcos, Teresa De last_name: Los Arcos - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Janne full_name: Halme, Janne last_name: Halme - first_name: Marianna full_name: Kemell, Marianna last_name: Kemell - first_name: Jan-Henrik full_name: Smått, Jan-Henrik last_name: Smått citation: ama: Qudsia S, Weiss A, Sirkiä S, et al. Influence of deposition temperature and thickness of ALD-TiO2 on planar perovskite solar cell performance. Applied Surface Science. Published online 2026:166755. doi:https://doi.org/10.1016/j.apsusc.2026.166755 apa: Qudsia, S., Weiss, A., Sirkiä, S., Wang, F., Rosqvist, E., Los Arcos, T. D., Weinberger, C., Halme, J., Kemell, M., & Smått, J.-H. (2026). Influence of deposition temperature and thickness of ALD-TiO2 on planar perovskite solar cell performance. Applied Surface Science, 166755. https://doi.org/10.1016/j.apsusc.2026.166755 bibtex: '@article{Qudsia_Weiss_Sirkiä_Wang_Rosqvist_Los Arcos_Weinberger_Halme_Kemell_Smått_2026, title={Influence of deposition temperature and thickness of ALD-TiO2 on planar perovskite solar cell performance}, DOI={https://doi.org/10.1016/j.apsusc.2026.166755}, journal={Applied Surface Science}, author={Qudsia, Syeda and Weiss, Alexander and Sirkiä, Saara and Wang, Fuzeng and Rosqvist, Emil and Los Arcos, Teresa De and Weinberger, Christian and Halme, Janne and Kemell, Marianna and Smått, Jan-Henrik}, year={2026}, pages={166755} }' chicago: Qudsia, Syeda, Alexander Weiss, Saara Sirkiä, Fuzeng Wang, Emil Rosqvist, Teresa De Los Arcos, Christian Weinberger, Janne Halme, Marianna Kemell, and Jan-Henrik Smått. “Influence of Deposition Temperature and Thickness of ALD-TiO2 on Planar Perovskite Solar Cell Performance.” Applied Surface Science, 2026, 166755. https://doi.org/10.1016/j.apsusc.2026.166755. ieee: 'S. Qudsia et al., “Influence of deposition temperature and thickness of ALD-TiO2 on planar perovskite solar cell performance,” Applied Surface Science, p. 166755, 2026, doi: https://doi.org/10.1016/j.apsusc.2026.166755.' mla: Qudsia, Syeda, et al. “Influence of Deposition Temperature and Thickness of ALD-TiO2 on Planar Perovskite Solar Cell Performance.” Applied Surface Science, 2026, p. 166755, doi:https://doi.org/10.1016/j.apsusc.2026.166755. short: S. Qudsia, A. Weiss, S. Sirkiä, F. Wang, E. Rosqvist, T.D. Los Arcos, C. Weinberger, J. Halme, M. Kemell, J.-H. Smått, Applied Surface Science (2026) 166755. date_created: 2026-04-01T08:39:55Z date_updated: 2026-04-07T13:37:22Z doi: https://doi.org/10.1016/j.apsusc.2026.166755 keyword: - Titanium dioxide - Atomic layer deposition - Electron transport layer - Perovskite solar cells language: - iso: eng main_file_link: - open_access: '1' url: https://www.sciencedirect.com/science/article/pii/S0169433226009591?via%3Dihub oa: '1' page: '166755' publication: Applied Surface Science publication_identifier: issn: - 0169-4332 status: public title: Influence of deposition temperature and thickness of ALD-TiO2 on planar perovskite solar cell performance type: journal_article user_id: '11848' year: '2026' ... --- _id: '66282' abstract: - lang: eng text: 'Hydrothermal carbonization (HTC) of pistachio shells was performed in a high-pressure batch reactor at 200 °C for 2 h, yielding a carbon-enriched hydrochar. Elemental analysis shows an increase in carbon mass fraction from 44.76 % to 54.09 % and a decrease in atomic O/C and H/C ratios, confirming carbonization as visualized in a Van Krevelen diagram. The hydrochar was chemically activated by potassium hydroxide (KOH) impregnation and thermal treatment, yielding 16–28 wt.% activated hydrochar. Adsorption isotherms were determined in a thermogravimetric, fluidized-bed reactor using a stepwise CO2 concentration program limited to 50 vol.% CO2 in N2 (0–5–10–25–50–0 vol.% CO2 at 100 kPa total pressure). The setup was extended by integrating online gas analysis to provide an independent, time-resolved mass-balance cross-check. Validation was performed using Lewatit VP OC 1065 by an internal Langmuir parity check and comparison with literature-based Toth model representations; gas analysis is demonstrated using a representative low-concentration step and by comparing Langmuir models derived from gas-based versus gravimetric loadings at 50 °C. For activated hydrochar, equilibrium points were obtained up to 50 vol.% CO2 (pCO2 ≈ 50 kPa) and show decreasing loading with increasing temperature. For literature comparison and indicative saturation reporting, isotherm fits were extrapolated to pure CO2 at 100 kPa: the maximum loading derived from the raw weighing signal was 1.84 mmol/g; after buoyancy correction, the corresponding value is 1.45 mmol/g.' article_type: original author: - first_name: Christoph full_name: Kroiß, Christoph last_name: Kroiß - first_name: Rafat full_name: Al Afif, Rafat last_name: Al Afif - first_name: Tobias full_name: Pröll, Tobias last_name: Pröll - first_name: Christoph full_name: Pfeifer, Christoph last_name: Pfeifer - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Gregor full_name: Tondl, Gregor last_name: Tondl citation: ama: Kroiß C, Al Afif R, Pröll T, Pfeifer C, Weinberger C, Tondl G. Validation of a fluidized bed thermogravimetric method with integrated gas analysis for CO2 capture by activated hydrochar from pistachio shells. Discover Applied Sciences. Published online 2026. doi:10.1007/s42452-026-09061-7 apa: Kroiß, C., Al Afif, R., Pröll, T., Pfeifer, C., Weinberger, C., & Tondl, G. (2026). Validation of a fluidized bed thermogravimetric method with integrated gas analysis for CO2 capture by activated hydrochar from pistachio shells. Discover Applied Sciences. https://doi.org/10.1007/s42452-026-09061-7 bibtex: '@article{Kroiß_Al Afif_Pröll_Pfeifer_Weinberger_Tondl_2026, title={Validation of a fluidized bed thermogravimetric method with integrated gas analysis for CO2 capture by activated hydrochar from pistachio shells}, DOI={10.1007/s42452-026-09061-7}, journal={Discover Applied Sciences}, publisher={Springer Science and Business Media LLC}, author={Kroiß, Christoph and Al Afif, Rafat and Pröll, Tobias and Pfeifer, Christoph and Weinberger, Christian and Tondl, Gregor}, year={2026} }' chicago: Kroiß, Christoph, Rafat Al Afif, Tobias Pröll, Christoph Pfeifer, Christian Weinberger, and Gregor Tondl. “Validation of a Fluidized Bed Thermogravimetric Method with Integrated Gas Analysis for CO2 Capture by Activated Hydrochar from Pistachio Shells.” Discover Applied Sciences, 2026. https://doi.org/10.1007/s42452-026-09061-7. ieee: 'C. Kroiß, R. Al Afif, T. Pröll, C. Pfeifer, C. Weinberger, and G. Tondl, “Validation of a fluidized bed thermogravimetric method with integrated gas analysis for CO2 capture by activated hydrochar from pistachio shells,” Discover Applied Sciences, 2026, doi: 10.1007/s42452-026-09061-7.' mla: Kroiß, Christoph, et al. “Validation of a Fluidized Bed Thermogravimetric Method with Integrated Gas Analysis for CO2 Capture by Activated Hydrochar from Pistachio Shells.” Discover Applied Sciences, Springer Science and Business Media LLC, 2026, doi:10.1007/s42452-026-09061-7. short: C. Kroiß, R. Al Afif, T. Pröll, C. Pfeifer, C. Weinberger, G. Tondl, Discover Applied Sciences (2026). date_created: 2026-07-06T11:30:48Z date_updated: 2026-07-20T08:18:24Z doi: 10.1007/s42452-026-09061-7 keyword: - Hydrothermal carbonization - Activated hydrochar - CO2 adsorption - Adsorption isotherms - Thermogravimetric analysis - Gas analysis - Method validation - Carbon capture language: - iso: eng main_file_link: - open_access: '1' url: https://link.springer.com/article/10.1007/s42452-026-09061-7 oa: '1' publication: Discover Applied Sciences publication_identifier: issn: - 3004-9261 publication_status: published publisher: Springer Science and Business Media LLC status: public title: Validation of a fluidized bed thermogravimetric method with integrated gas analysis for CO2 capture by activated hydrochar from pistachio shells type: journal_article user_id: '11848' year: '2026' ... --- _id: '66546' abstract: - lang: eng text: To further improve the capabilities necessary to accurately predict biochar properties based on feedstock characteristics, a study correlating feedstock structural components with biochar properties was conducted. To produce biochar, ten different biomass feedstocks were sourced mostly from Austria. The feedstocks gathered were spruce chips; woodchips from broad-leaved forestry; wheat bran; Japanese knotweed; walnut shells; screening overflow from composting; and residues from Mary thistle, rapeseed, hemp, and poppy flower processing. These feedstocks were pyrolyzed at 500 and 700 °C under nitrogen (N2) atmosphere in a customized muffle furnace. The feedstocks were analyzed for their lignin, hemicellulose, cellulose, fat content, and other properties. Mercury intrusion porosimetry (MIP) was performed on the biochar samples, with the highest documented intruded volume being 3.64 cm3/g. Elemental recoveries in the biochar samples were determined and correlated with feedstock structural components (FSC). Additionally, the water solubility of biochar nutrient elements was determined, with K showing the highest solubility of 35.5 ± 18.5% at 700 °C. Elemental recoveries of C/H/N/Cl showed significant correlations with FSC (e.g., Cl showed a significant and strong negative correlation with cellulose, r = − 0.874/p < 0.01). Intruded volume as well as K solubility also showed significant correlations. These results indicate that feedstock structural components can serve as predictors for more biochar properties than currently used in the literature, although the limited sample size requires further research to confirm the findings presented here. article_type: original author: - first_name: Konstantin full_name: Moser, Konstantin last_name: Moser - first_name: Christoph full_name: Pfeifer, Christoph last_name: Pfeifer - first_name: Elisabeth full_name: Wopienka, Elisabeth last_name: Wopienka - first_name: Jure full_name: Voglar, Jure last_name: Voglar - first_name: Anže full_name: Prašnikar, Anže last_name: Prašnikar - first_name: Blaž full_name: Likozar, Blaž last_name: Likozar - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 - first_name: Dilara full_name: Çubuk, Dilara last_name: Çubuk - first_name: Walter full_name: Haslinger, Walter last_name: Haslinger citation: ama: Moser K, Pfeifer C, Wopienka E, et al. Exploring feedstock structural components as predictors for physico-chemical biochar properties. Scientific Reports. Published online 2026. doi:10.1038/s41598-026-61427-4 apa: Moser, K., Pfeifer, C., Wopienka, E., Voglar, J., Prašnikar, A., Likozar, B., Weinberger, C., Tiemann, M., Çubuk, D., & Haslinger, W. (2026). Exploring feedstock structural components as predictors for physico-chemical biochar properties. Scientific Reports. https://doi.org/10.1038/s41598-026-61427-4 bibtex: '@article{Moser_Pfeifer_Wopienka_Voglar_Prašnikar_Likozar_Weinberger_Tiemann_Çubuk_Haslinger_2026, title={Exploring feedstock structural components as predictors for physico-chemical biochar properties}, DOI={10.1038/s41598-026-61427-4}, journal={Scientific Reports}, publisher={Springer Science and Business Media LLC}, author={Moser, Konstantin and Pfeifer, Christoph and Wopienka, Elisabeth and Voglar, Jure and Prašnikar, Anže and Likozar, Blaž and Weinberger, Christian and Tiemann, Michael and Çubuk, Dilara and Haslinger, Walter}, year={2026} }' chicago: Moser, Konstantin, Christoph Pfeifer, Elisabeth Wopienka, Jure Voglar, Anže Prašnikar, Blaž Likozar, Christian Weinberger, Michael Tiemann, Dilara Çubuk, and Walter Haslinger. “Exploring Feedstock Structural Components as Predictors for Physico-Chemical Biochar Properties.” Scientific Reports, 2026. https://doi.org/10.1038/s41598-026-61427-4. ieee: 'K. Moser et al., “Exploring feedstock structural components as predictors for physico-chemical biochar properties,” Scientific Reports, 2026, doi: 10.1038/s41598-026-61427-4.' mla: Moser, Konstantin, et al. “Exploring Feedstock Structural Components as Predictors for Physico-Chemical Biochar Properties.” Scientific Reports, Springer Science and Business Media LLC, 2026, doi:10.1038/s41598-026-61427-4. short: K. Moser, C. Pfeifer, E. Wopienka, J. Voglar, A. Prašnikar, B. Likozar, C. Weinberger, M. Tiemann, D. Çubuk, W. Haslinger, Scientific Reports (2026). date_created: 2026-07-20T08:03:28Z date_updated: 2026-07-20T08:05:45Z doi: 10.1038/s41598-026-61427-4 language: - iso: eng main_file_link: - open_access: '1' url: https://www.nature.com/articles/s41598-026-61427-4 oa: '1' publication: Scientific Reports publication_identifier: issn: - 2045-2322 publication_status: published publisher: Springer Science and Business Media LLC status: public title: Exploring feedstock structural components as predictors for physico-chemical biochar properties type: journal_article user_id: '11848' year: '2026' ... --- _id: '66036' abstract: - lang: eng text: Light-assisted metal oxide-based chemiresistive gas sensors are widely explored for operation at relatively low temperatures, yet the investigation of the role of irradiance, as opposed to wavelength, remains underrepresented. Here, we systematically quantify the irradiance-dependent behavior of ordered mesoporous In2O3 under visible light illumination. Photoconductivity measurements reveal two distinct irradiance regimes consistent with trap-limited transport at low power and recombination- or saturation-limited transport at high power. Gas sensing experiments towards CO and H2 show a pronounced non-monotonic response, reaching maximum responses of 0.74 for 135 ppm CO at 67 mW cm−2 and 0.64 for 90 ppm H2 at 11 mW cm−2, followed by strong suppression at higher irradiance. Illumination also accelerated the response kinetics. At 60 ppm, t90 decreases from 96 to 12 s for CO and 141 to 27 s for H2, corresponding to an 8- and 5-fold faster response time, respectively. Near-ambient pressure-XPS under controlled atmosphere and density functional theory calculations indicate defect-mediated excitation. Oxygen vacancy states and illumination-induced modification of surface oxygen species govern this behavior. The results establish irradiance as a critical mechanistic parameter that determines whether In2O3 operates in a surface-controlled or bulk photoconductive regime. These findings highlight the need to explicitly optimize and report irradiance in illuminated gas sensor studies, and not only the power consumption of the light source. article_number: acssensors.6c01100 article_type: original author: - first_name: Sven full_name: Voth, Sven last_name: Voth - first_name: Zhenyu full_name: Zhao, Zhenyu last_name: Zhao - first_name: Dominik full_name: Baier, Dominik last_name: Baier - first_name: Alexandra full_name: Glass, Alexandra last_name: Glass - first_name: Hossam full_name: Elgabarty, Hossam id: '60250' last_name: Elgabarty orcid: 0000-0002-4945-1481 - first_name: Oskar J. full_name: Sandberg, Oskar J. last_name: Sandberg - first_name: Guido full_name: Grundmeier, Guido id: '194' last_name: Grundmeier - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 - first_name: Jan-Henrik full_name: Smått, Jan-Henrik last_name: Smått - first_name: Nicklas full_name: Anttu, Nicklas last_name: Anttu - first_name: Teresa full_name: de los Arcos, Teresa last_name: de los Arcos - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger citation: ama: 'Voth S, Zhao Z, Baier D, et al. Role of Irradiance in Light-Activated In₂O₃Gas Sensors: Why More Light Is Not Always Better. ACS Sensors. 2026;11(7). doi:10.1021/acssensors.6c01100' apa: 'Voth, S., Zhao, Z., Baier, D., Glass, A., Elgabarty, H., Sandberg, O. J., Grundmeier, G., Tiemann, M., Smått, J.-H., Anttu, N., de los Arcos, T., & Weinberger, C. (2026). Role of Irradiance in Light-Activated In₂O₃Gas Sensors: Why More Light Is Not Always Better. ACS Sensors, 11(7), Article acssensors.6c01100. https://doi.org/10.1021/acssensors.6c01100' bibtex: '@article{Voth_Zhao_Baier_Glass_Elgabarty_Sandberg_Grundmeier_Tiemann_Smått_Anttu_et al._2026, title={Role of Irradiance in Light-Activated In₂O₃Gas Sensors: Why More Light Is Not Always Better}, volume={11}, DOI={10.1021/acssensors.6c01100}, number={7acssensors.6c01100}, journal={ACS Sensors}, publisher={American Chemical Society (ACS)}, author={Voth, Sven and Zhao, Zhenyu and Baier, Dominik and Glass, Alexandra and Elgabarty, Hossam and Sandberg, Oskar J. and Grundmeier, Guido and Tiemann, Michael and Smått, Jan-Henrik and Anttu, Nicklas and et al.}, year={2026} }' chicago: 'Voth, Sven, Zhenyu Zhao, Dominik Baier, Alexandra Glass, Hossam Elgabarty, Oskar J. Sandberg, Guido Grundmeier, et al. “Role of Irradiance in Light-Activated In₂O₃Gas Sensors: Why More Light Is Not Always Better.” ACS Sensors 11, no. 7 (2026). https://doi.org/10.1021/acssensors.6c01100.' ieee: 'S. Voth et al., “Role of Irradiance in Light-Activated In₂O₃Gas Sensors: Why More Light Is Not Always Better,” ACS Sensors, vol. 11, no. 7, Art. no. acssensors.6c01100, 2026, doi: 10.1021/acssensors.6c01100.' mla: 'Voth, Sven, et al. “Role of Irradiance in Light-Activated In₂O₃Gas Sensors: Why More Light Is Not Always Better.” ACS Sensors, vol. 11, no. 7, acssensors.6c01100, American Chemical Society (ACS), 2026, doi:10.1021/acssensors.6c01100.' short: S. Voth, Z. Zhao, D. Baier, A. Glass, H. Elgabarty, O.J. Sandberg, G. Grundmeier, M. Tiemann, J.-H. Smått, N. Anttu, T. de los Arcos, C. Weinberger, ACS Sensors 11 (2026). date_created: 2026-06-24T10:36:11Z date_updated: 2026-07-27T12:18:15Z doi: 10.1021/acssensors.6c01100 intvolume: ' 11' issue: '7' keyword: - resistive gas sensing - indium oxide - photoactivation - irradiance - photoconductivity - charge carrier dynamics - oxygen vacancies language: - iso: eng project: - _id: '1130' name: Exploration of optoelectronic properties of metal oxides used in gas sensors and solar cells publication: ACS Sensors publication_identifier: issn: - 2379-3694 - 2379-3694 publication_status: published publisher: American Chemical Society (ACS) status: public title: 'Role of Irradiance in Light-Activated In₂O₃Gas Sensors: Why More Light Is Not Always Better' type: journal_article user_id: '11848' volume: 11 year: '2026' ... --- _id: '56265' abstract: - lang: eng text: The metal-organic framework CPO-27 exhibits free coordination sites (open metal sites) and can be prepared with a wide range of metals that influence its properties. It is therefore an intriguing structure to study sorption phenomena. We analyze the water resistance and sorption behavior of these frameworks, with particular attention to the sorption mechanism in detail and the structure of the confined water molecules. For this purpose, we use manometric water vapor sorption analysis and FTIR spectroscopy. The respective metal center orchestrates both the adsorption behavior and the arrangement of the water molecules in the micropores of the framework. The extent to which water molecules form hydrogen bonds (with each other and with framework oxygen atoms) plays a crucial role in the stability of the framework towards water. Water adsorption is governed by the coordination of water molecules to the open metal sites (except for CPO-27-Cu) and subsequent H-bonding. A stepwise adsorption of water is observed, with significant differences depending on the choice of metal. author: - first_name: Marvin full_name: Kloß, Marvin last_name: Kloß - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 citation: ama: 'Kloß M, Weinberger C, Tiemann M. Water in the Micropores of CPO-27 Metal-Organic Frameworks: A Comprehensive Study. Microporous and Mesoporous Materials. 2025;381:113352. doi:10.1016/j.micromeso.2024.113352' apa: 'Kloß, M., Weinberger, C., & Tiemann, M. (2025). Water in the Micropores of CPO-27 Metal-Organic Frameworks: A Comprehensive Study. Microporous and Mesoporous Materials, 381, 113352. https://doi.org/10.1016/j.micromeso.2024.113352' bibtex: '@article{Kloß_Weinberger_Tiemann_2025, title={Water in the Micropores of CPO-27 Metal-Organic Frameworks: A Comprehensive Study}, volume={381}, DOI={10.1016/j.micromeso.2024.113352}, journal={Microporous and Mesoporous Materials}, publisher={Elsevier BV}, author={Kloß, Marvin and Weinberger, Christian and Tiemann, Michael}, year={2025}, pages={113352} }' chicago: 'Kloß, Marvin, Christian Weinberger, and Michael Tiemann. “Water in the Micropores of CPO-27 Metal-Organic Frameworks: A Comprehensive Study.” Microporous and Mesoporous Materials 381 (2025): 113352. https://doi.org/10.1016/j.micromeso.2024.113352.' ieee: 'M. Kloß, C. Weinberger, and M. Tiemann, “Water in the Micropores of CPO-27 Metal-Organic Frameworks: A Comprehensive Study,” Microporous and Mesoporous Materials, vol. 381, p. 113352, 2025, doi: 10.1016/j.micromeso.2024.113352.' mla: 'Kloß, Marvin, et al. “Water in the Micropores of CPO-27 Metal-Organic Frameworks: A Comprehensive Study.” Microporous and Mesoporous Materials, vol. 381, Elsevier BV, 2025, p. 113352, doi:10.1016/j.micromeso.2024.113352.' short: M. Kloß, C. Weinberger, M. Tiemann, Microporous and Mesoporous Materials 381 (2025) 113352. date_created: 2024-09-27T08:40:43Z date_updated: 2024-11-11T07:48:04Z doi: 10.1016/j.micromeso.2024.113352 intvolume: ' 381' language: - iso: eng main_file_link: - open_access: '1' oa: '1' page: '113352' publication: Microporous and Mesoporous Materials publication_identifier: issn: - 1387-1811 publication_status: published publisher: Elsevier BV status: public title: 'Water in the Micropores of CPO-27 Metal-Organic Frameworks: A Comprehensive Study' type: journal_article user_id: '23547' volume: 381 year: '2025' ... --- _id: '62816' abstract: - lang: eng text: The increasing demand for advanced sensing technologies drives the development of chemical sensors using innovative materials. In gas sensing, optical sensors are often used to detect gases such as CO, NOx, and O2. Oxygen sensors typically incorporate dyes into oxygen-permeable matrices like polymers, silica, or zeolites. Alternatively, semiconductor surface chemistry can enable O2 detection. However, these approaches are often limited by slow response and recovery times and low selectivity, restricting their practical applications. The metal-organic framework MOF-76(Eu) and its yttrium-modified variant, MOF-76(Eu/Y) are reported to exhibit highly reversible and fast optical responses to varying O2 concentrations. Time-resolved emission measurements are performed over short (seconds) and long (hours) timescales using N2 and synthetic air mixtures. Cross-sensitivity to humidity is analyzed. Multichannel scaling photon-counting experiments confirm quenching at the linker level, as the emission lifetime remains nearly constant. Yttrium significantly improves stability and performance at room temperature. Structural and optical changes induced by yttrium are investigated. Additionally, MIL-78(Eu), another Eu-BTC-based MOF with a different coordination environment, is synthesized. Unlike MOF-76(Eu), MIL-78(Eu) exhibits distinct optical properties but lacks a reversible response to O2. These results highlight the potential of MOF-76-based materials for high-performance O2 sensing. article_number: e11190 author: - first_name: Zhenyu full_name: Zhao, Zhenyu last_name: Zhao - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Jakob full_name: Steube, Jakob id: '40342' last_name: Steube orcid: 0000-0003-3178-4429 - first_name: Matthias full_name: Bauer, Matthias id: '47241' last_name: Bauer orcid: 0000-0002-9294-6076 - first_name: Martin full_name: Brehm, Martin id: '100167' last_name: Brehm - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 citation: ama: Zhao Z, Weinberger C, Steube J, Bauer M, Brehm M, Tiemann M. Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76). Advanced Functional Materials. Published online 2025. doi:10.1002/adfm.202511190 apa: Zhao, Z., Weinberger, C., Steube, J., Bauer, M., Brehm, M., & Tiemann, M. (2025). Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76). Advanced Functional Materials, Article e11190. https://doi.org/10.1002/adfm.202511190 bibtex: '@article{Zhao_Weinberger_Steube_Bauer_Brehm_Tiemann_2025, title={Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)}, DOI={10.1002/adfm.202511190}, number={e11190}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Zhao, Zhenyu and Weinberger, Christian and Steube, Jakob and Bauer, Matthias and Brehm, Martin and Tiemann, Michael}, year={2025} }' chicago: Zhao, Zhenyu, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, and Michael Tiemann. “Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76).” Advanced Functional Materials, 2025. https://doi.org/10.1002/adfm.202511190. ieee: 'Z. Zhao, C. Weinberger, J. Steube, M. Bauer, M. Brehm, and M. Tiemann, “Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76),” Advanced Functional Materials, Art. no. e11190, 2025, doi: 10.1002/adfm.202511190.' mla: Zhao, Zhenyu, et al. “Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76).” Advanced Functional Materials, e11190, Wiley, 2025, doi:10.1002/adfm.202511190. short: Z. Zhao, C. Weinberger, J. Steube, M. Bauer, M. Brehm, M. Tiemann, Advanced Functional Materials (2025). date_created: 2025-12-03T17:09:28Z date_updated: 2025-12-03T17:11:15Z department: - _id: '35' - _id: '2' - _id: '307' doi: 10.1002/adfm.202511190 language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: Advanced Functional Materials publication_identifier: issn: - 1616-301X - 1616-3028 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76) type: journal_article user_id: '23547' year: '2025' ... --- _id: '60194' article_type: original author: - first_name: Hendrik full_name: Peeters, Hendrik id: '49942' last_name: Peeters orcid: https://orcid.org/ 0000-0002-7143-3781 - first_name: Jan-Luca full_name: Hansel, Jan-Luca id: '69242' last_name: Hansel - first_name: André full_name: Graute, André id: '13662' last_name: Graute - first_name: Matthias full_name: Fischer, Matthias id: '146' last_name: Fischer - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Iris full_name: Neiske, Iris id: '53827' last_name: Neiske - first_name: Sabine full_name: Fechner, Sabine id: '54823' last_name: Fechner orcid: 0000-0001-5645-5870 citation: ama: Peeters H, Hansel J-L, Graute A, et al. Virtual Reality trifft Künstliche Intelligenz. KI unterstützt bei virtueller Praktikumsvorbereitung. Laborpraxis. 2025;(5-6):22-25. apa: Peeters, H., Hansel, J.-L., Graute, A., Fischer, M., Weinberger, C., Neiske, I., & Fechner, S. (2025). Virtual Reality trifft Künstliche Intelligenz. KI unterstützt bei virtueller Praktikumsvorbereitung. Laborpraxis, 5–6, 22–25. bibtex: '@article{Peeters_Hansel_Graute_Fischer_Weinberger_Neiske_Fechner_2025, title={Virtual Reality trifft Künstliche Intelligenz. KI unterstützt bei virtueller Praktikumsvorbereitung}, number={5–6}, journal={Laborpraxis}, author={Peeters, Hendrik and Hansel, Jan-Luca and Graute, André and Fischer, Matthias and Weinberger, Christian and Neiske, Iris and Fechner, Sabine}, year={2025}, pages={22–25} }' chicago: 'Peeters, Hendrik, Jan-Luca Hansel, André Graute, Matthias Fischer, Christian Weinberger, Iris Neiske, and Sabine Fechner. “Virtual Reality trifft Künstliche Intelligenz. KI unterstützt bei virtueller Praktikumsvorbereitung.” Laborpraxis, no. 5–6 (2025): 22–25.' ieee: H. Peeters et al., “Virtual Reality trifft Künstliche Intelligenz. KI unterstützt bei virtueller Praktikumsvorbereitung,” Laborpraxis, no. 5–6, pp. 22–25, 2025. mla: Peeters, Hendrik, et al. “Virtual Reality trifft Künstliche Intelligenz. KI unterstützt bei virtueller Praktikumsvorbereitung.” Laborpraxis, no. 5–6, 2025, pp. 22–25. short: H. Peeters, J.-L. Hansel, A. Graute, M. Fischer, C. Weinberger, I. Neiske, S. Fechner, Laborpraxis (2025) 22–25. date_created: 2025-06-12T10:46:15Z date_updated: 2025-12-14T00:02:32Z department: - _id: '386' issue: 5-6 language: - iso: ger main_file_link: - open_access: '1' url: https://issuu.com/docs/26f3a2d235d0ffc8c54ff6721d3de068?fr=sMzU0NjgyNjAxMTk oa: '1' page: 22-25 publication: Laborpraxis publication_status: published status: public title: Virtual Reality trifft Künstliche Intelligenz. KI unterstützt bei virtueller Praktikumsvorbereitung type: journal_article user_id: '54823' year: '2025' ... --- _id: '60815' abstract: - lang: eng text: AbstractThe increasing demand for advanced sensing technologies drives the development of chemical sensors using innovative materials. In gas sensing, optical sensors are often used to detect gases such as CO, NOx, and O2. Oxygen sensors typically incorporate dyes into oxygen‐permeable matrices like polymers, silica, or zeolites. Alternatively, semiconductor surface chemistry can enable O2 detection. However, these approaches are often limited by slow response and recovery times and low selectivity, restricting their practical applications. The metal‐organic framework MOF‐76(Eu) and its yttrium‐modified variant, MOF‐76(Eu/Y) are reported to exhibit highly reversible and fast optical responses to varying O2 concentrations. Time‐resolved emission measurements are performed over short (seconds) and long (hours) timescales using N2 and synthetic air mixtures. Cross‐sensitivity to humidity is analyzed. Multichannel scaling photon‐counting experiments confirm quenching at the linker level, as the emission lifetime remains nearly constant. Yttrium significantly improves stability and performance at room temperature. Structural and optical changes induced by yttrium are investigated. Additionally, MIL‐78(Eu), another Eu‐BTC‐based MOF with a different coordination environment, is synthesized. Unlike MOF‐76(Eu), MIL‐78(Eu) exhibits distinct optical properties but lacks a reversible response to O2. These results highlight the potential of MOF‐76‐based materials for high‐performance O2 sensing. article_number: e11190 article_type: original author: - first_name: Zhenyu full_name: Zhao, Zhenyu last_name: Zhao - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Jakob full_name: Steube, Jakob id: '40342' last_name: Steube orcid: 0000-0003-3178-4429 - first_name: Matthias full_name: Bauer, Matthias id: '47241' last_name: Bauer orcid: 0000-0002-9294-6076 - first_name: Martin full_name: Brehm, Martin id: '100167' last_name: Brehm - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 citation: ama: Zhao Z, Weinberger C, Steube J, Bauer M, Brehm M, Tiemann M. Fast‐Responding O₂ Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76). Advanced Functional Materials. Published online 2025. doi:10.1002/adfm.202511190 apa: Zhao, Z., Weinberger, C., Steube, J., Bauer, M., Brehm, M., & Tiemann, M. (2025). Fast‐Responding O₂ Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76). Advanced Functional Materials, Article e11190. https://doi.org/10.1002/adfm.202511190 bibtex: '@article{Zhao_Weinberger_Steube_Bauer_Brehm_Tiemann_2025, title={Fast‐Responding O₂ Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)}, DOI={10.1002/adfm.202511190}, number={e11190}, journal={Advanced Functional Materials}, publisher={Wiley}, author={Zhao, Zhenyu and Weinberger, Christian and Steube, Jakob and Bauer, Matthias and Brehm, Martin and Tiemann, Michael}, year={2025} }' chicago: Zhao, Zhenyu, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, and Michael Tiemann. “Fast‐Responding O₂ Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76).” Advanced Functional Materials, 2025. https://doi.org/10.1002/adfm.202511190. ieee: 'Z. Zhao, C. Weinberger, J. Steube, M. Bauer, M. Brehm, and M. Tiemann, “Fast‐Responding O₂ Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76),” Advanced Functional Materials, Art. no. e11190, 2025, doi: 10.1002/adfm.202511190.' mla: Zhao, Zhenyu, et al. “Fast‐Responding O₂ Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76).” Advanced Functional Materials, e11190, Wiley, 2025, doi:10.1002/adfm.202511190. short: Z. Zhao, C. Weinberger, J. Steube, M. Bauer, M. Brehm, M. Tiemann, Advanced Functional Materials (2025). date_created: 2025-07-29T06:59:19Z date_updated: 2025-07-29T07:02:22Z department: - _id: '35' - _id: '2' - _id: '307' doi: 10.1002/adfm.202511190 language: - iso: eng main_file_link: - open_access: '1' oa: '1' publication: Advanced Functional Materials publication_identifier: issn: - 1616-301X - 1616-3028 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: Fast‐Responding O₂ Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76) type: journal_article user_id: '23547' year: '2025' ... --- _id: '52372' abstract: - lang: eng text: Due to the hydrolytic instability of LiPF6 in carbonate-based solvents, HF is a typical impurity in Li-ion battery electrolytes. HF significantly influences the performance of Li-ion batteries, for example by impacting the formation of the solid electrolyte interphase at the anode and by affecting transition metal dissolution at the cathode. Additionally, HF complicates studying fundamental interfacial electrochemistry of Li-ion battery electrolytes, such as direct anion reduction, because it is electrocatalytically relatively unstable, resulting in LiF passivation layers. Methods to selectively remove ppm levels of HF from LiPF6-containing carbonate-based electrolytes are limited. We introduce and benchmark a simple yet efficient electrochemical in situ method to selectively remove ppm amounts of HF from LiPF6-containing carbonate-based electrolytes. The basic idea is the application of a suitable potential to a high surface-area metallic electrode upon which only HF reacts (electrocatalytically) while all other electrolyte components are unaffected under the respective conditions. article_type: original author: - first_name: Xiaokun full_name: Ge, Xiaokun last_name: Ge - first_name: Marten full_name: Huck, Marten last_name: Huck - first_name: Andreas full_name: Kuhlmann, Andreas last_name: Kuhlmann - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Xiaodan full_name: Xu, Xiaodan last_name: Xu - first_name: Zhenyu full_name: Zhao, Zhenyu last_name: Zhao - first_name: Hans-Georg full_name: Steinrueck, Hans-Georg last_name: Steinrueck citation: ama: Ge X, Huck M, Kuhlmann A, et al. Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes. Journal of The Electrochemical Society. 2024;171:030552. doi:10.1149/1945-7111/ad30d3 apa: Ge, X., Huck, M., Kuhlmann, A., Tiemann, M., Weinberger, C., Xu, X., Zhao, Z., & Steinrueck, H.-G. (2024). Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes. Journal of The Electrochemical Society, 171, 030552. https://doi.org/10.1149/1945-7111/ad30d3 bibtex: '@article{Ge_Huck_Kuhlmann_Tiemann_Weinberger_Xu_Zhao_Steinrueck_2024, title={Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes}, volume={171}, DOI={10.1149/1945-7111/ad30d3}, journal={Journal of The Electrochemical Society}, publisher={The Electrochemical Society}, author={Ge, Xiaokun and Huck, Marten and Kuhlmann, Andreas and Tiemann, Michael and Weinberger, Christian and Xu, Xiaodan and Zhao, Zhenyu and Steinrueck, Hans-Georg}, year={2024}, pages={030552} }' chicago: 'Ge, Xiaokun, Marten Huck, Andreas Kuhlmann, Michael Tiemann, Christian Weinberger, Xiaodan Xu, Zhenyu Zhao, and Hans-Georg Steinrueck. “Electrochemical Removal of HF from Carbonate-Based LiPF6-Containing Li-Ion Battery Electrolytes.” Journal of The Electrochemical Society 171 (2024): 030552. https://doi.org/10.1149/1945-7111/ad30d3.' ieee: 'X. Ge et al., “Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes,” Journal of The Electrochemical Society, vol. 171, p. 030552, 2024, doi: 10.1149/1945-7111/ad30d3.' mla: Ge, Xiaokun, et al. “Electrochemical Removal of HF from Carbonate-Based LiPF6-Containing Li-Ion Battery Electrolytes.” Journal of The Electrochemical Society, vol. 171, The Electrochemical Society, 2024, p. 030552, doi:10.1149/1945-7111/ad30d3. short: X. Ge, M. Huck, A. Kuhlmann, M. Tiemann, C. Weinberger, X. Xu, Z. Zhao, H.-G. Steinrueck, Journal of The Electrochemical Society 171 (2024) 030552. date_created: 2024-03-08T06:27:10Z date_updated: 2024-03-25T17:01:09Z department: - _id: '35' - _id: '2' - _id: '307' doi: 10.1149/1945-7111/ad30d3 intvolume: ' 171' keyword: - Materials Chemistry - Electrochemistry - Surfaces - Coatings and Films - Condensed Matter Physics - Renewable Energy - Sustainability and the Environment - Electronic - Optical and Magnetic Materials language: - iso: eng main_file_link: - open_access: '1' url: https://dx.doi.org/10.1149/1945-7111/ad30d3 oa: '1' page: '030552' publication: Journal of The Electrochemical Society publication_identifier: issn: - 0013-4651 - 1945-7111 publication_status: published publisher: The Electrochemical Society quality_controlled: '1' status: public title: Electrochemical Removal of HF from Carbonate-based LiPF6-containing Li-ion Battery Electrolytes type: journal_article user_id: '23547' volume: 171 year: '2024' ... --- _id: '55999' abstract: - lang: eng text: Clean hydrogen is a key aspect of carbon neutrality, necessitating robust methods for monitoring hydrogen concentration in critical infrastructures like pipelines or power plants. While semiconducting metal oxides such as In2O3 can monitor gas concentrations down to the ppm range, they often exhibit cross-sensitivity to other gases like H2O. In this study, we investigated whether cyclic optical illumination of a gas-sensitive In2O3 layer creates identifiable changes in a gas sensor´s electronic resistance that can be linked to H2 and H2O concentrations via machine learning. We exposed nanostructured In2O3 with a large surface area of 95 m2 g-1 to H2 concentrations (0-800 ppm) and relative humidity (0-70%) under cyclic activation utilizing blue light. The sensors were tested for 20 classes of gas combinations. A support vector machine achieved classification rates up to 92.0%, with reliable reproducibility (88.2 ± 2.7%) across five individual sensors using 10-fold cross-validation. Our findings suggest that cyclic optical activation can be used as a tool to classify H2 and H2O concentrations. article_type: original author: - first_name: 'Dominik ' full_name: 'Baier, Dominik ' last_name: Baier - first_name: 'Alexander ' full_name: 'Krüger, Alexander ' last_name: Krüger - first_name: 'Thorsten ' full_name: 'Wagner, Thorsten ' last_name: Wagner - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger citation: ama: 'Baier D, Krüger A, Wagner T, Tiemann M, Weinberger C. Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided Classification of H2 and H2O. Chemosensors. 2024;12(9):178. doi:10.3390/chemosensors12090178' apa: 'Baier, D., Krüger, A., Wagner, T., Tiemann, M., & Weinberger, C. (2024). Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided Classification of H2 and H2O. Chemosensors, 12(9), 178. https://doi.org/10.3390/chemosensors12090178' bibtex: '@article{Baier_Krüger_Wagner_Tiemann_Weinberger_2024, title={Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided Classification of H2 and H2O}, volume={12}, DOI={10.3390/chemosensors12090178}, number={9}, journal={Chemosensors}, publisher={MDPI}, author={Baier, Dominik and Krüger, Alexander and Wagner, Thorsten and Tiemann, Michael and Weinberger, Christian}, year={2024}, pages={178} }' chicago: 'Baier, Dominik , Alexander Krüger, Thorsten Wagner, Michael Tiemann, and Christian Weinberger. “Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided Classification of H2 and H2O.” Chemosensors 12, no. 9 (2024): 178. https://doi.org/10.3390/chemosensors12090178.' ieee: 'D. Baier, A. Krüger, T. Wagner, M. Tiemann, and C. Weinberger, “Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided Classification of H2 and H2O,” Chemosensors, vol. 12, no. 9, p. 178, 2024, doi: 10.3390/chemosensors12090178.' mla: 'Baier, Dominik, et al. “Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided Classification of H2 and H2O.” Chemosensors, vol. 12, no. 9, MDPI, 2024, p. 178, doi:10.3390/chemosensors12090178.' short: D. Baier, A. Krüger, T. Wagner, M. Tiemann, C. Weinberger, Chemosensors 12 (2024) 178. date_created: 2024-09-03T13:49:42Z date_updated: 2025-11-26T12:14:21Z ddc: - '540' department: - _id: '2' - _id: '307' doi: 10.3390/chemosensors12090178 file: - access_level: closed content_type: application/pdf creator: cweinber date_created: 2024-09-03T13:58:18Z date_updated: 2024-09-03T13:58:18Z file_id: '56000' file_name: chemosensors-12-00178.pdf file_size: 3275869 relation: main_file success: 1 file_date_updated: 2024-09-03T13:58:18Z has_accepted_license: '1' intvolume: ' 12' issue: '9' keyword: - resistive gas sensor - chemiresistor - semiconductor - metal oxide - In2O3 - mesoporous - hydrogen - humidtiy - machine learning - sustainable language: - iso: eng main_file_link: - open_access: '1' url: https://www.mdpi.com/2227-9040/12/9/178 oa: '1' page: '178' publication: Chemosensors publication_identifier: issn: - 2227-9040 publication_status: published publisher: MDPI quality_controlled: '1' status: public title: 'Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided Classification of H2 and H2O' type: journal_article user_id: '11848' volume: 12 year: '2024' ... --- _id: '56947' abstract: - lang: eng text: Pore engineering is commonly used to alter the properties of metal–organic frameworks. This is achieved by incorporating different linker molecules (L) into the structure, generating isoreticular frameworks. CPO-27, also named MOF-74, is a prototypical material for this approach, offering the potential to modify the size of its one-dimensional pore channels and the hydrophobicity of pore walls using various linker ligands during synthesis. Thermal activation of these materials yields accessible open metal sites (i.e., under-coordinated metal centers) at the pore walls, thus acting as strong primary binding sites for guest molecules, including water. We study the effect of the pore size and linker hydrophobicity within a series of Ni2+-based isoreticular frameworks (i.e., Ni2L, L = dhtp, dhip, dondc, bpp, bpm, tpp), analyzing their water sorption behavior and the water interactions in the confined pore space. For this purpose, we apply water vapor sorption analysis and Fourier transform infrared spectroscopy. In addition, defect degrees of all compounds are determined by thermogravimetric analysis and solution 1H nuclear magnetic resonance spectroscopy. We find that larger defect degrees affect the preferential sorption sites in Ni2dhtp, while no such indication is found for the other materials in our study. Instead, strong evidence is found for the formation of water bridges/chains between coordinating water molecules, as previously observed for hydrophobic porous carbons and mesoporous silica. This suggests similar sorption energies for additional water molecules in materials with larger pore sizes after saturation of the primary binding sites, resulting in more bulk-like water arrangements. Consequently, the sorption mechanism is driven by classical pore condensation through H-bonding anchor sites instead of sorption at discrete sites. article_type: original author: - first_name: Marvin full_name: Kloß, Marvin last_name: Kloß - first_name: Lara full_name: Schäfers, Lara last_name: Schäfers - first_name: Zhenyu full_name: Zhao, Zhenyu last_name: Zhao - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Hans full_name: Egold, Hans id: '101' last_name: Egold - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 citation: ama: 'Kloß M, Schäfers L, Zhao Z, Weinberger C, Egold H, Tiemann M. Water Sorption on Isoreticular CPO-27-Type MOFs: From Discrete Sorption Sites to Water-Bridge-Mediated Pore Condensation. Nanomaterials. 2024;14(22):1791. doi:10.3390/nano14221791' apa: 'Kloß, M., Schäfers, L., Zhao, Z., Weinberger, C., Egold, H., & Tiemann, M. (2024). Water Sorption on Isoreticular CPO-27-Type MOFs: From Discrete Sorption Sites to Water-Bridge-Mediated Pore Condensation. Nanomaterials, 14(22), 1791. https://doi.org/10.3390/nano14221791' bibtex: '@article{Kloß_Schäfers_Zhao_Weinberger_Egold_Tiemann_2024, title={Water Sorption on Isoreticular CPO-27-Type MOFs: From Discrete Sorption Sites to Water-Bridge-Mediated Pore Condensation}, volume={14}, DOI={10.3390/nano14221791}, number={22}, journal={Nanomaterials}, publisher={MDPI AG}, author={Kloß, Marvin and Schäfers, Lara and Zhao, Zhenyu and Weinberger, Christian and Egold, Hans and Tiemann, Michael}, year={2024}, pages={1791} }' chicago: 'Kloß, Marvin, Lara Schäfers, Zhenyu Zhao, Christian Weinberger, Hans Egold, and Michael Tiemann. “Water Sorption on Isoreticular CPO-27-Type MOFs: From Discrete Sorption Sites to Water-Bridge-Mediated Pore Condensation.” Nanomaterials 14, no. 22 (2024): 1791. https://doi.org/10.3390/nano14221791.' ieee: 'M. Kloß, L. Schäfers, Z. Zhao, C. Weinberger, H. Egold, and M. Tiemann, “Water Sorption on Isoreticular CPO-27-Type MOFs: From Discrete Sorption Sites to Water-Bridge-Mediated Pore Condensation,” Nanomaterials, vol. 14, no. 22, p. 1791, 2024, doi: 10.3390/nano14221791.' mla: 'Kloß, Marvin, et al. “Water Sorption on Isoreticular CPO-27-Type MOFs: From Discrete Sorption Sites to Water-Bridge-Mediated Pore Condensation.” Nanomaterials, vol. 14, no. 22, MDPI AG, 2024, p. 1791, doi:10.3390/nano14221791.' short: M. Kloß, L. Schäfers, Z. Zhao, C. Weinberger, H. Egold, M. Tiemann, Nanomaterials 14 (2024) 1791. date_created: 2024-11-08T06:18:11Z date_updated: 2025-01-10T14:27:39Z department: - _id: '35' - _id: '2' - _id: '307' doi: 10.3390/nano14221791 intvolume: ' 14' issue: '22' language: - iso: eng main_file_link: - open_access: '1' oa: '1' page: '1791' publication: Nanomaterials publication_identifier: issn: - 2079-4991 publication_status: published publisher: MDPI AG quality_controlled: '1' status: public title: 'Water Sorption on Isoreticular CPO-27-Type MOFs: From Discrete Sorption Sites to Water-Bridge-Mediated Pore Condensation' type: journal_article user_id: '23547' volume: 14 year: '2024' ... --- _id: '56080' abstract: - lang: eng text: CPO‐27 is a metal‐organic framework (MOF) with coordinatively unsaturated metal centers (open metal sites). It is therefore an ideal host material for small guest molecules, including water. This opens up numerous possible applications, such as proton conduction, humidity sensing, water harvesting, or adsorption‐driven heat pumps. For all of these applications, profound knowledge of the adsorption and desorption of water in the micropores is mandatory. The hydration and water structure in CPO‐27‐M (M = Zn or Cu) is investigated using water vapor sorption, Fourier transform infrared (FTIR) spectroscopy, density functional theory (DFT) calculations, and molecular dynamics simulation. In the pores of CPO‐27‐Zn, water binds as a ligand to the Zn center. Additional water molecules are stepwise incorporated at defined positions, forming a network of H‐bonds with the framework and with each other. In CPO‐27‐Cu, hydration proceeds by an entirely different mechanism. Here, water does not coordinate to the metal center, but only forms H‐bonds with the framework; pore filling occurs mostly in a single step, with the open metal site remaining unoccupied. Water in the pores forms clusters with extensive intra‐cluster H‐bonding. author: - first_name: Marvin full_name: Kloß, Marvin last_name: Kloß - first_name: Michael full_name: Beerbaum, Michael last_name: Beerbaum - first_name: Dominik full_name: Baier, Dominik last_name: Baier - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Frederik full_name: Zysk, Frederik id: '14757' last_name: Zysk - first_name: Hossam full_name: Elgabarty, Hossam id: '60250' last_name: Elgabarty orcid: 0000-0002-4945-1481 - first_name: Thomas D. full_name: Kühne, Thomas D. last_name: Kühne - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 citation: ama: 'Kloß M, Beerbaum M, Baier D, et al. Understanding Hydration in CPO‐27 Metal‐Organic Frameworks: Strong Impact of the Chemical Nature of the Metal (Cu, Zn). Advanced Materials Interfaces. 2024;11(35):2400476. doi:10.1002/admi.202400476' apa: 'Kloß, M., Beerbaum, M., Baier, D., Weinberger, C., Zysk, F., Elgabarty, H., Kühne, T. D., & Tiemann, M. (2024). Understanding Hydration in CPO‐27 Metal‐Organic Frameworks: Strong Impact of the Chemical Nature of the Metal (Cu, Zn). Advanced Materials Interfaces, 11(35), 2400476. https://doi.org/10.1002/admi.202400476' bibtex: '@article{Kloß_Beerbaum_Baier_Weinberger_Zysk_Elgabarty_Kühne_Tiemann_2024, title={Understanding Hydration in CPO‐27 Metal‐Organic Frameworks: Strong Impact of the Chemical Nature of the Metal (Cu, Zn)}, volume={11}, DOI={10.1002/admi.202400476}, number={35}, journal={Advanced Materials Interfaces}, publisher={Wiley}, author={Kloß, Marvin and Beerbaum, Michael and Baier, Dominik and Weinberger, Christian and Zysk, Frederik and Elgabarty, Hossam and Kühne, Thomas D. and Tiemann, Michael}, year={2024}, pages={2400476} }' chicago: 'Kloß, Marvin, Michael Beerbaum, Dominik Baier, Christian Weinberger, Frederik Zysk, Hossam Elgabarty, Thomas D. Kühne, and Michael Tiemann. “Understanding Hydration in CPO‐27 Metal‐Organic Frameworks: Strong Impact of the Chemical Nature of the Metal (Cu, Zn).” Advanced Materials Interfaces 11, no. 35 (2024): 2400476. https://doi.org/10.1002/admi.202400476.' ieee: 'M. Kloß et al., “Understanding Hydration in CPO‐27 Metal‐Organic Frameworks: Strong Impact of the Chemical Nature of the Metal (Cu, Zn),” Advanced Materials Interfaces, vol. 11, no. 35, p. 2400476, 2024, doi: 10.1002/admi.202400476.' mla: 'Kloß, Marvin, et al. “Understanding Hydration in CPO‐27 Metal‐Organic Frameworks: Strong Impact of the Chemical Nature of the Metal (Cu, Zn).” Advanced Materials Interfaces, vol. 11, no. 35, Wiley, 2024, p. 2400476, doi:10.1002/admi.202400476.' short: M. Kloß, M. Beerbaum, D. Baier, C. Weinberger, F. Zysk, H. Elgabarty, T.D. Kühne, M. Tiemann, Advanced Materials Interfaces 11 (2024) 2400476. date_created: 2024-09-06T07:07:17Z date_updated: 2025-01-10T14:23:51Z department: - _id: '35' - _id: '2' - _id: '307' doi: 10.1002/admi.202400476 intvolume: ' 11' issue: '35' language: - iso: eng main_file_link: - open_access: '1' oa: '1' page: '2400476' publication: Advanced Materials Interfaces publication_identifier: issn: - 2196-7350 - 2196-7350 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: 'Understanding Hydration in CPO‐27 Metal‐Organic Frameworks: Strong Impact of the Chemical Nature of the Metal (Cu, Zn)' type: journal_article user_id: '23547' volume: 11 year: '2024' ... --- _id: '45571' abstract: - lang: eng text: Self-templating is a facile strategy for synthesizing porous carbons by direct pyrolysis of organic metal salts. However, the method typically suffers from low yields (<4%) and limited specific surface areas (SSA<2000 m2 g−1) originating from low activity of metal cations (e.g., K+ or Na+) in promoting construction and activation of carbon frameworks. Here we use cesium acetate as the only precursor of oxo-carbons with large SSA of the order of 3000 m2 g−1, pore volume approaching 2 cm3 g−1, tunable oxygen contents, and yields of up to 15 %. We unravel the role of Cs+ as an efficient promoter of framework formation, templating and etching agent, while acetates act as carbon/oxygen sources of carbonaceous frameworks. The oxo-carbons show record-high CO2 uptake of 8.71 mmol g−1 and an ultimate specific capacitance of 313 F g−1 in the supercapacitor. This study helps to understand and rationally tailor the materials design by a still rare organic solid-state chemistry. article_type: original author: - first_name: Jiaxin full_name: Li, Jiaxin last_name: Li - first_name: Janina full_name: Kossmann, Janina last_name: Kossmann - first_name: Ke full_name: Zeng, Ke last_name: Zeng - first_name: Kun full_name: Zhang, Kun last_name: Zhang - first_name: Bingjie full_name: Wang, Bingjie last_name: Wang - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Markus full_name: Antonietti, Markus last_name: Antonietti - first_name: Mateusz full_name: Odziomek, Mateusz last_name: Odziomek - first_name: Nieves full_name: López‐Salas, Nieves last_name: López‐Salas citation: ama: 'Li J, Kossmann J, Zeng K, et al. When High‐Temperature Cesium Chemistry Meets Self‐Templating: Metal Acetates as Building Blocks of Unusual Highly Porous Carbons. Angewandte Chemie International Edition. Published online 2023. doi:10.1002/anie.202217808' apa: 'Li, J., Kossmann, J., Zeng, K., Zhang, K., Wang, B., Weinberger, C., Antonietti, M., Odziomek, M., & López‐Salas, N. (2023). When High‐Temperature Cesium Chemistry Meets Self‐Templating: Metal Acetates as Building Blocks of Unusual Highly Porous Carbons. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202217808' bibtex: '@article{Li_Kossmann_Zeng_Zhang_Wang_Weinberger_Antonietti_Odziomek_López‐Salas_2023, title={When High‐Temperature Cesium Chemistry Meets Self‐Templating: Metal Acetates as Building Blocks of Unusual Highly Porous Carbons}, DOI={10.1002/anie.202217808}, journal={Angewandte Chemie International Edition}, publisher={Wiley}, author={Li, Jiaxin and Kossmann, Janina and Zeng, Ke and Zhang, Kun and Wang, Bingjie and Weinberger, Christian and Antonietti, Markus and Odziomek, Mateusz and López‐Salas, Nieves}, year={2023} }' chicago: 'Li, Jiaxin, Janina Kossmann, Ke Zeng, Kun Zhang, Bingjie Wang, Christian Weinberger, Markus Antonietti, Mateusz Odziomek, and Nieves López‐Salas. “When High‐Temperature Cesium Chemistry Meets Self‐Templating: Metal Acetates as Building Blocks of Unusual Highly Porous Carbons.” Angewandte Chemie International Edition, 2023. https://doi.org/10.1002/anie.202217808.' ieee: 'J. Li et al., “When High‐Temperature Cesium Chemistry Meets Self‐Templating: Metal Acetates as Building Blocks of Unusual Highly Porous Carbons,” Angewandte Chemie International Edition, 2023, doi: 10.1002/anie.202217808.' mla: 'Li, Jiaxin, et al. “When High‐Temperature Cesium Chemistry Meets Self‐Templating: Metal Acetates as Building Blocks of Unusual Highly Porous Carbons.” Angewandte Chemie International Edition, Wiley, 2023, doi:10.1002/anie.202217808.' short: J. Li, J. Kossmann, K. Zeng, K. Zhang, B. Wang, C. Weinberger, M. Antonietti, M. Odziomek, N. López‐Salas, Angewandte Chemie International Edition (2023). date_created: 2023-06-12T07:42:09Z date_updated: 2024-03-21T12:01:33Z doi: 10.1002/anie.202217808 keyword: - CO2 Adsorption - Cesium Acetate - Cesium Effect - Porous Carbons - Supercapacitor language: - iso: eng publication: Angewandte Chemie International Edition publication_identifier: issn: - 0044-8249 - 1521-3757 publication_status: published publisher: Wiley status: public title: 'When High‐Temperature Cesium Chemistry Meets Self‐Templating: Metal Acetates as Building Blocks of Unusual Highly Porous Carbons' type: journal_article user_id: '11848' year: '2023' ... --- _id: '43457' abstract: - lang: eng text: The production of hydrogen and the utilization of biomass for sustainable concepts of energy conversion and storage require gas sensors that discriminate between hydrogen (H2) and carbon monoxide (CO). Mesoporous copper–ceria (Cu–CeO2) materials with large specific surface areas and uniform porosity are prepared by nanocasting, and their textural properties are characterized by N2 physisorption, powder XRD, scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy. The oxidation states of copper (Cu+, Cu2+) and cerium (Ce3+, Ce4+) are investigated by XPS. The materials are used as resistive gas sensors for H2 and CO. The sensors show a stronger response to CO than to H2 and low cross-sensitivity to humidity. Copper turns out to be a necessary component; copper-free ceria materials prepared by the same method show only poor sensing performance. By measuring both gases (CO and H2) simultaneously, it is shown that this behavior can be utilized for selective sensing of CO in the presence of H2. author: - first_name: Dominik full_name: Baier, Dominik last_name: Baier - first_name: Tatiana full_name: Priamushko, Tatiana last_name: Priamushko - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Freddy full_name: Kleitz, Freddy last_name: Kleitz - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 citation: ama: Baier D, Priamushko T, Weinberger C, Kleitz F, Tiemann M. Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors. ACS Sensors. 2023;8(4):1616-1623. doi:10.1021/acssensors.2c02739 apa: Baier, D., Priamushko, T., Weinberger, C., Kleitz, F., & Tiemann, M. (2023). Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors. ACS Sensors, 8(4), 1616–1623. https://doi.org/10.1021/acssensors.2c02739 bibtex: '@article{Baier_Priamushko_Weinberger_Kleitz_Tiemann_2023, title={Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors}, volume={8}, DOI={10.1021/acssensors.2c02739}, number={4}, journal={ACS Sensors}, publisher={American Chemical Society (ACS)}, author={Baier, Dominik and Priamushko, Tatiana and Weinberger, Christian and Kleitz, Freddy and Tiemann, Michael}, year={2023}, pages={1616–1623} }' chicago: 'Baier, Dominik, Tatiana Priamushko, Christian Weinberger, Freddy Kleitz, and Michael Tiemann. “Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors.” ACS Sensors 8, no. 4 (2023): 1616–23. https://doi.org/10.1021/acssensors.2c02739.' ieee: 'D. Baier, T. Priamushko, C. Weinberger, F. Kleitz, and M. Tiemann, “Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors,” ACS Sensors, vol. 8, no. 4, pp. 1616–1623, 2023, doi: 10.1021/acssensors.2c02739.' mla: Baier, Dominik, et al. “Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors.” ACS Sensors, vol. 8, no. 4, American Chemical Society (ACS), 2023, pp. 1616–23, doi:10.1021/acssensors.2c02739. short: D. Baier, T. Priamushko, C. Weinberger, F. Kleitz, M. Tiemann, ACS Sensors 8 (2023) 1616–1623. date_created: 2023-04-12T06:52:34Z date_updated: 2023-05-01T05:47:53Z department: - _id: '35' - _id: '2' - _id: '307' doi: 10.1021/acssensors.2c02739 intvolume: ' 8' issue: '4' keyword: - Fluid Flow and Transfer Processes - Process Chemistry and Technology - Instrumentation - Bioengineering language: - iso: eng page: 1616 - 1623 publication: ACS Sensors publication_identifier: issn: - 2379-3694 - 2379-3694 publication_status: published publisher: American Chemical Society (ACS) quality_controlled: '1' status: public title: Selective Discrimination between CO and H2 with Copper–Ceria-Resistive Gas Sensors type: journal_article user_id: '23547' volume: 8 year: '2023' ... --- _id: '44837' abstract: - lang: eng text: Hydrothermal carbonization (HTC) is an efficient thermochemical method for the conversion of organic feedstock to carbonaceous solids. HTC of different saccharides is known to produce microspheres (MS) with mostly Gaussian size distribution, which are utilized as functional materials in various applications, both as pristine MS and as a precursor for hard carbon MS. Although the average size of the MS can be influenced by adjusting the process parameters, there is no reliable mechanism to affect their size distribution. Our results demonstrate that HTC of trehalose, in contrast to other saccharides, results in a distinctly bimodal sphere diameter distribution consisting of small spheres with diameters of (2.1 ± 0.2) μm and of large spheres with diameters of (10.4 ± 2.6) μm. Remarkably, after pyrolytic post-carbonization at 1000 °C the MS develop a multimodal pore size distribution with abundant macropores > 100 nm, mesopores > 10 nm and micropores < 2 nm, which were examined by small-angle X-ray scattering and visualized by charge-compensated helium ion microscopy. The bimodal size distribution and hierarchical porosity provide an extraordinary set of properties and potential variables for the tailored synthesis of hierarchical porous carbons, making trehalose-derived hard carbon MS a highly promising material for applications in catalysis, filtration, and energy storage devices. author: - first_name: Martin full_name: Wortmann, Martin last_name: Wortmann - first_name: Waldemar full_name: Keil, Waldemar last_name: Keil - first_name: Elise full_name: Diestelhorst, Elise last_name: Diestelhorst - first_name: Michael full_name: Westphal, Michael last_name: Westphal - first_name: René full_name: Haverkamp, René last_name: Haverkamp - first_name: Bennet full_name: Brockhagen, Bennet last_name: Brockhagen - first_name: Jan full_name: Biedinger, Jan last_name: Biedinger - first_name: Laila full_name: Bondzio, Laila last_name: Bondzio - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Dominik full_name: Baier, Dominik last_name: Baier - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 - first_name: Andreas full_name: Hütten, Andreas last_name: Hütten - first_name: Thomas full_name: Hellweg, Thomas last_name: Hellweg - first_name: Günter full_name: Reiss, Günter last_name: Reiss - first_name: Claudia full_name: Schmidt, Claudia last_name: Schmidt - first_name: Klaus full_name: Sattler, Klaus last_name: Sattler - first_name: Natalie full_name: Frese, Natalie last_name: Frese citation: ama: Wortmann M, Keil W, Diestelhorst E, et al. Hard carbon microspheres with bimodal size distribution and hierarchical porosity via hydrothermal carbonization of trehalose. RSC Advances. 2023;13(21):14181-14189. doi:10.1039/d3ra01301d apa: Wortmann, M., Keil, W., Diestelhorst, E., Westphal, M., Haverkamp, R., Brockhagen, B., Biedinger, J., Bondzio, L., Weinberger, C., Baier, D., Tiemann, M., Hütten, A., Hellweg, T., Reiss, G., Schmidt, C., Sattler, K., & Frese, N. (2023). Hard carbon microspheres with bimodal size distribution and hierarchical porosity via hydrothermal carbonization of trehalose. RSC Advances, 13(21), 14181–14189. https://doi.org/10.1039/d3ra01301d bibtex: '@article{Wortmann_Keil_Diestelhorst_Westphal_Haverkamp_Brockhagen_Biedinger_Bondzio_Weinberger_Baier_et al._2023, title={Hard carbon microspheres with bimodal size distribution and hierarchical porosity via hydrothermal carbonization of trehalose}, volume={13}, DOI={10.1039/d3ra01301d}, number={21}, journal={RSC Advances}, publisher={Royal Society of Chemistry (RSC)}, author={Wortmann, Martin and Keil, Waldemar and Diestelhorst, Elise and Westphal, Michael and Haverkamp, René and Brockhagen, Bennet and Biedinger, Jan and Bondzio, Laila and Weinberger, Christian and Baier, Dominik and et al.}, year={2023}, pages={14181–14189} }' chicago: 'Wortmann, Martin, Waldemar Keil, Elise Diestelhorst, Michael Westphal, René Haverkamp, Bennet Brockhagen, Jan Biedinger, et al. “Hard Carbon Microspheres with Bimodal Size Distribution and Hierarchical Porosity via Hydrothermal Carbonization of Trehalose.” RSC Advances 13, no. 21 (2023): 14181–89. https://doi.org/10.1039/d3ra01301d.' ieee: 'M. Wortmann et al., “Hard carbon microspheres with bimodal size distribution and hierarchical porosity via hydrothermal carbonization of trehalose,” RSC Advances, vol. 13, no. 21, pp. 14181–14189, 2023, doi: 10.1039/d3ra01301d.' mla: Wortmann, Martin, et al. “Hard Carbon Microspheres with Bimodal Size Distribution and Hierarchical Porosity via Hydrothermal Carbonization of Trehalose.” RSC Advances, vol. 13, no. 21, Royal Society of Chemistry (RSC), 2023, pp. 14181–89, doi:10.1039/d3ra01301d. short: M. Wortmann, W. Keil, E. Diestelhorst, M. Westphal, R. Haverkamp, B. Brockhagen, J. Biedinger, L. Bondzio, C. Weinberger, D. Baier, M. Tiemann, A. Hütten, T. Hellweg, G. Reiss, C. Schmidt, K. Sattler, N. Frese, RSC Advances 13 (2023) 14181–14189. date_created: 2023-05-12T07:16:15Z date_updated: 2023-05-12T07:18:51Z department: - _id: '35' - _id: '2' - _id: '307' doi: 10.1039/d3ra01301d intvolume: ' 13' issue: '21' keyword: - General Chemical Engineering - General Chemistry language: - iso: eng main_file_link: - open_access: '1' oa: '1' page: 14181-14189 publication: RSC Advances publication_identifier: issn: - 2046-2069 publication_status: published publisher: Royal Society of Chemistry (RSC) quality_controlled: '1' status: public title: Hard carbon microspheres with bimodal size distribution and hierarchical porosity via hydrothermal carbonization of trehalose type: journal_article user_id: '23547' volume: 13 year: '2023' ... --- _id: '46480' article_number: '147317' author: - first_name: Hendrik full_name: Müller, Hendrik last_name: Müller - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Guido full_name: Grundmeier, Guido id: '194' last_name: Grundmeier - first_name: Maria Teresa full_name: de los Arcos de Pedro, Maria Teresa id: '54556' last_name: de los Arcos de Pedro citation: ama: Müller H, Weinberger C, Grundmeier G, de los Arcos de Pedro MT. UV-enhanced environmental charge compensation in near ambient pressure XPS. Journal of Electron Spectroscopy and Related Phenomena. 2023;264. doi:10.1016/j.elspec.2023.147317 apa: Müller, H., Weinberger, C., Grundmeier, G., & de los Arcos de Pedro, M. T. (2023). UV-enhanced environmental charge compensation in near ambient pressure XPS. Journal of Electron Spectroscopy and Related Phenomena, 264, Article 147317. https://doi.org/10.1016/j.elspec.2023.147317 bibtex: '@article{Müller_Weinberger_Grundmeier_de los Arcos de Pedro_2023, title={UV-enhanced environmental charge compensation in near ambient pressure XPS}, volume={264}, DOI={10.1016/j.elspec.2023.147317}, number={147317}, journal={Journal of Electron Spectroscopy and Related Phenomena}, publisher={Elsevier BV}, author={Müller, Hendrik and Weinberger, Christian and Grundmeier, Guido and de los Arcos de Pedro, Maria Teresa}, year={2023} }' chicago: Müller, Hendrik, Christian Weinberger, Guido Grundmeier, and Maria Teresa de los Arcos de Pedro. “UV-Enhanced Environmental Charge Compensation in near Ambient Pressure XPS.” Journal of Electron Spectroscopy and Related Phenomena 264 (2023). https://doi.org/10.1016/j.elspec.2023.147317. ieee: 'H. Müller, C. Weinberger, G. Grundmeier, and M. T. de los Arcos de Pedro, “UV-enhanced environmental charge compensation in near ambient pressure XPS,” Journal of Electron Spectroscopy and Related Phenomena, vol. 264, Art. no. 147317, 2023, doi: 10.1016/j.elspec.2023.147317.' mla: Müller, Hendrik, et al. “UV-Enhanced Environmental Charge Compensation in near Ambient Pressure XPS.” Journal of Electron Spectroscopy and Related Phenomena, vol. 264, 147317, Elsevier BV, 2023, doi:10.1016/j.elspec.2023.147317. short: H. Müller, C. Weinberger, G. Grundmeier, M.T. de los Arcos de Pedro, Journal of Electron Spectroscopy and Related Phenomena 264 (2023). date_created: 2023-08-11T14:11:57Z date_updated: 2023-08-11T14:13:19Z department: - _id: '302' doi: 10.1016/j.elspec.2023.147317 intvolume: ' 264' keyword: - Physical and Theoretical Chemistry - Spectroscopy - Condensed Matter Physics - Atomic and Molecular Physics - and Optics - Radiation - Electronic - Optical and Magnetic Materials language: - iso: eng publication: Journal of Electron Spectroscopy and Related Phenomena publication_identifier: issn: - 0368-2048 publication_status: published publisher: Elsevier BV status: public title: UV-enhanced environmental charge compensation in near ambient pressure XPS type: journal_article user_id: '54556' volume: 264 year: '2023' ... --- _id: '33691' abstract: - lang: eng text: Near ambient pressure XPS in nitrogen atmosphere was utilized to investigate gas-solid interactions within porous SiO2 films ranging from 30 to 75 nm thickness. The films were differentiated in terms of porosity and roughness. The XPS N1s core levels of the N2 gas in presence of the SiO2 samples showed variations in width, binding energy and line shape. The width correlated with the surface charge induced in the dielectric films upon X-ray irradiation. The observed different binding energies observed for the N1s peak can only partly be associated with intrinsic work function differences between the samples, opening the possibility that the effect of physisorption at room temperature could be detected by a shift in the measured binding energy. However, the signals also show an increasing asymmetry with rising surface charge. This might be associated with the formation of vertical electrical gradients within the dielectric porous thin films, which complicates the assignment of binding energy positions to specific surface-related effects. With the support of Monte Carlo and first principles density functional theory calculations, the observed shifts were discussed in terms of the possible formation of transitory dipoles upon N2 physisorption within the porous SiO2 films. article_number: '154525' article_type: original author: - first_name: Teresa full_name: de los Arcos, Teresa last_name: de los Arcos - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Frederik full_name: Zysk, Frederik id: '14757' last_name: Zysk - first_name: Varun full_name: Raj Damerla, Varun last_name: Raj Damerla - first_name: Sabrina full_name: Kollmann, Sabrina last_name: Kollmann - first_name: Pascal full_name: Vieth, Pascal last_name: Vieth - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne - first_name: Guido full_name: Grundmeier, Guido id: '194' last_name: Grundmeier citation: ama: de los Arcos T, Weinberger C, Zysk F, et al. Challenges in the interpretation of gas core levels for the determination of gas-solid interactions within dielectric porous films by ambient pressure XPS. Applied Surface Science. 2022;604. doi:10.1016/j.apsusc.2022.154525 apa: de los Arcos, T., Weinberger, C., Zysk, F., Raj Damerla, V., Kollmann, S., Vieth, P., Tiemann, M., Kühne, T., & Grundmeier, G. (2022). Challenges in the interpretation of gas core levels for the determination of gas-solid interactions within dielectric porous films by ambient pressure XPS. Applied Surface Science, 604, Article 154525. https://doi.org/10.1016/j.apsusc.2022.154525 bibtex: '@article{de los Arcos_Weinberger_Zysk_Raj Damerla_Kollmann_Vieth_Tiemann_Kühne_Grundmeier_2022, title={Challenges in the interpretation of gas core levels for the determination of gas-solid interactions within dielectric porous films by ambient pressure XPS}, volume={604}, DOI={10.1016/j.apsusc.2022.154525}, number={154525}, journal={Applied Surface Science}, publisher={Elsevier BV}, author={de los Arcos, Teresa and Weinberger, Christian and Zysk, Frederik and Raj Damerla, Varun and Kollmann, Sabrina and Vieth, Pascal and Tiemann, Michael and Kühne, Thomas and Grundmeier, Guido}, year={2022} }' chicago: Arcos, Teresa de los, Christian Weinberger, Frederik Zysk, Varun Raj Damerla, Sabrina Kollmann, Pascal Vieth, Michael Tiemann, Thomas Kühne, and Guido Grundmeier. “Challenges in the Interpretation of Gas Core Levels for the Determination of Gas-Solid Interactions within Dielectric Porous Films by Ambient Pressure XPS.” Applied Surface Science 604 (2022). https://doi.org/10.1016/j.apsusc.2022.154525. ieee: 'T. de los Arcos et al., “Challenges in the interpretation of gas core levels for the determination of gas-solid interactions within dielectric porous films by ambient pressure XPS,” Applied Surface Science, vol. 604, Art. no. 154525, 2022, doi: 10.1016/j.apsusc.2022.154525.' mla: de los Arcos, Teresa, et al. “Challenges in the Interpretation of Gas Core Levels for the Determination of Gas-Solid Interactions within Dielectric Porous Films by Ambient Pressure XPS.” Applied Surface Science, vol. 604, 154525, Elsevier BV, 2022, doi:10.1016/j.apsusc.2022.154525. short: T. de los Arcos, C. Weinberger, F. Zysk, V. Raj Damerla, S. Kollmann, P. Vieth, M. Tiemann, T. Kühne, G. Grundmeier, Applied Surface Science 604 (2022). date_created: 2022-10-11T08:22:25Z date_updated: 2023-03-03T11:32:04Z department: - _id: '613' - _id: '35' - _id: '2' - _id: '307' - _id: '302' - _id: '304' doi: 10.1016/j.apsusc.2022.154525 intvolume: ' 604' keyword: - Surfaces - Coatings and Films - Condensed Matter Physics - Surfaces and Interfaces - General Physics and Astronomy - General Chemistry language: - iso: eng publication: Applied Surface Science publication_identifier: issn: - 0169-4332 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Challenges in the interpretation of gas core levels for the determination of gas-solid interactions within dielectric porous films by ambient pressure XPS type: journal_article user_id: '23547' volume: 604 year: '2022' ... --- _id: '33685' abstract: - lang: eng text: In the spatial confinement of cylindrical mesopores with diameters of a few nanometers, water molecules experience restrictions in hydrogen bonding. This leads to a different behavior regarding the molecular orientational freedom (‘structure of water') compared to the bulk liquid state. In addition to the pore size, the behavior is also strongly affected by the strength of the pore wall-to-water interactions, that is, the pore wall polarity. In this work, this is studied both experimentally and theoretically. The surface polarity of mesoporous silica (SiO2) is modified by functionalization with trimethylsilyl moieties, resulting in a change from a hydrophilic (pristine) to a hydrophobic pore wall. The mesopore surface is characterized by N2 and H2O sorption experiments. Those results are combined with IR spectroscopy to investigate pore wall-to-water interactions leading to different structures of water in the mesopore. Furthermore, the water's structure is studied theoretically to gain deeper insight into the interfacial interactions. For this purpose, the structure of water is analyzed by pairing densities, coordination, and angular distributions with a novel adaptation of surface-specific sum-frequency generation calculation for pore environments. article_number: '2200245' article_type: original author: - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Frederik full_name: Zysk, Frederik id: '14757' last_name: Zysk - first_name: Marc full_name: Hartmann, Marc last_name: Hartmann - first_name: Naveen full_name: Kaliannan, Naveen last_name: Kaliannan - first_name: Waldemar full_name: Keil, Waldemar last_name: Keil - first_name: Thomas full_name: Kühne, Thomas id: '49079' last_name: Kühne - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 citation: ama: Weinberger C, Zysk F, Hartmann M, et al. The Structure of Water in Silica Mesopores – Influence of the Pore Wall Polarity. Advanced Materials Interfaces. 2022;9(20). doi:10.1002/admi.202200245 apa: Weinberger, C., Zysk, F., Hartmann, M., Kaliannan, N., Keil, W., Kühne, T., & Tiemann, M. (2022). The Structure of Water in Silica Mesopores – Influence of the Pore Wall Polarity. Advanced Materials Interfaces, 9(20), Article 2200245. https://doi.org/10.1002/admi.202200245 bibtex: '@article{Weinberger_Zysk_Hartmann_Kaliannan_Keil_Kühne_Tiemann_2022, title={The Structure of Water in Silica Mesopores – Influence of the Pore Wall Polarity}, volume={9}, DOI={10.1002/admi.202200245}, number={202200245}, journal={Advanced Materials Interfaces}, publisher={Wiley}, author={Weinberger, Christian and Zysk, Frederik and Hartmann, Marc and Kaliannan, Naveen and Keil, Waldemar and Kühne, Thomas and Tiemann, Michael}, year={2022} }' chicago: Weinberger, Christian, Frederik Zysk, Marc Hartmann, Naveen Kaliannan, Waldemar Keil, Thomas Kühne, and Michael Tiemann. “The Structure of Water in Silica Mesopores – Influence of the Pore Wall Polarity.” Advanced Materials Interfaces 9, no. 20 (2022). https://doi.org/10.1002/admi.202200245. ieee: 'C. Weinberger et al., “The Structure of Water in Silica Mesopores – Influence of the Pore Wall Polarity,” Advanced Materials Interfaces, vol. 9, no. 20, Art. no. 2200245, 2022, doi: 10.1002/admi.202200245.' mla: Weinberger, Christian, et al. “The Structure of Water in Silica Mesopores – Influence of the Pore Wall Polarity.” Advanced Materials Interfaces, vol. 9, no. 20, 2200245, Wiley, 2022, doi:10.1002/admi.202200245. short: C. Weinberger, F. Zysk, M. Hartmann, N. Kaliannan, W. Keil, T. Kühne, M. Tiemann, Advanced Materials Interfaces 9 (2022). date_created: 2022-10-11T08:17:57Z date_updated: 2023-03-03T11:33:24Z department: - _id: '613' - _id: '35' - _id: '2' - _id: '307' - _id: '304' doi: 10.1002/admi.202200245 intvolume: ' 9' issue: '20' keyword: - Mechanical Engineering - Mechanics of Materials language: - iso: eng main_file_link: - open_access: '1' url: https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202200245 oa: '1' publication: Advanced Materials Interfaces publication_identifier: issn: - 2196-7350 - 2196-7350 publication_status: published publisher: Wiley quality_controlled: '1' status: public title: The Structure of Water in Silica Mesopores – Influence of the Pore Wall Polarity type: journal_article user_id: '23547' volume: 9 year: '2022' ... --- _id: '29376' abstract: - lang: eng text: The electrochemical properties of carbonaceous materials produced by hydrothermal carbonization, referred to as hydrochar, can be substantially improved by post-carbonization via pyrolysis. Although these materials have been widely studied for a variety of applications, the mechanisms underlying the pyrolysis are yet poorly understood. This study provides a comprehensive temperature-resolved characterization of the chemical composition, morphology and crystallinity of sucrose-derived hydrochar during pyrolysis. Thermogravimetric analysis, differential scanning calorimetry, and elemental analysis have shown that the dry hydrochar loses about 41% of its dry mass due to the exothermic disintegration of oxygen-containing groups until the carbonization is completed at about 850 °C with a total carbon yield of 93%. The carbonization and aromatization of the initially furanic and keto-aliphatic structure were analyzed by 13C solid-state nuclear magnetic resonance spectroscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The transition from an amorphous to a nanocrystalline graphitic structure was analyzed using X-ray diffraction and Raman spectroscopy. The pore formation mechanism was examined by helium ion microscopy, transmission electron microscopy, and nitrogen adsorption measurements. The results indicate the formation of oxygen-rich nanoclusters up to 700 °C, which decompose up to 750 °C leaving behind equally sized pores, resulting in a surface area of up to 480 m2/g. article_number: '105404' article_type: original author: - first_name: Martin full_name: Wortmann, Martin last_name: Wortmann - first_name: Waldemar full_name: Keil, Waldemar last_name: Keil - first_name: Bennet full_name: Brockhagen, Bennet last_name: Brockhagen - first_name: Jan full_name: Biedinger, Jan last_name: Biedinger - first_name: Michael full_name: Westphal, Michael last_name: Westphal - first_name: Christian full_name: Weinberger, Christian id: '11848' last_name: Weinberger - first_name: Elise full_name: Diestelhorst, Elise last_name: Diestelhorst - first_name: Wiebke full_name: Hachmann, Wiebke last_name: Hachmann - first_name: Yanjing full_name: Zhao, Yanjing last_name: Zhao - first_name: Michael full_name: Tiemann, Michael id: '23547' last_name: Tiemann orcid: 0000-0003-1711-2722 - first_name: Günter full_name: Reiss, Günter last_name: Reiss - first_name: Bruno full_name: Hüsgen, Bruno last_name: Hüsgen - first_name: Claudia full_name: Schmidt, Claudia id: '466' last_name: Schmidt orcid: 0000-0003-3179-9997 - first_name: Klaus full_name: Sattler, Klaus last_name: Sattler - first_name: Natalie full_name: Frese, Natalie last_name: Frese citation: ama: Wortmann M, Keil W, Brockhagen B, et al. Pyrolysis of sucrose-derived hydrochar. Journal of Analytical and Applied Pyrolysis. 2022;161. doi:10.1016/j.jaap.2021.105404 apa: Wortmann, M., Keil, W., Brockhagen, B., Biedinger, J., Westphal, M., Weinberger, C., Diestelhorst, E., Hachmann, W., Zhao, Y., Tiemann, M., Reiss, G., Hüsgen, B., Schmidt, C., Sattler, K., & Frese, N. (2022). Pyrolysis of sucrose-derived hydrochar. Journal of Analytical and Applied Pyrolysis, 161, Article 105404. https://doi.org/10.1016/j.jaap.2021.105404 bibtex: '@article{Wortmann_Keil_Brockhagen_Biedinger_Westphal_Weinberger_Diestelhorst_Hachmann_Zhao_Tiemann_et al._2022, title={Pyrolysis of sucrose-derived hydrochar}, volume={161}, DOI={10.1016/j.jaap.2021.105404}, number={105404}, journal={Journal of Analytical and Applied Pyrolysis}, publisher={Elsevier BV}, author={Wortmann, Martin and Keil, Waldemar and Brockhagen, Bennet and Biedinger, Jan and Westphal, Michael and Weinberger, Christian and Diestelhorst, Elise and Hachmann, Wiebke and Zhao, Yanjing and Tiemann, Michael and et al.}, year={2022} }' chicago: Wortmann, Martin, Waldemar Keil, Bennet Brockhagen, Jan Biedinger, Michael Westphal, Christian Weinberger, Elise Diestelhorst, et al. “Pyrolysis of Sucrose-Derived Hydrochar.” Journal of Analytical and Applied Pyrolysis 161 (2022). https://doi.org/10.1016/j.jaap.2021.105404. ieee: 'M. Wortmann et al., “Pyrolysis of sucrose-derived hydrochar,” Journal of Analytical and Applied Pyrolysis, vol. 161, Art. no. 105404, 2022, doi: 10.1016/j.jaap.2021.105404.' mla: Wortmann, Martin, et al. “Pyrolysis of Sucrose-Derived Hydrochar.” Journal of Analytical and Applied Pyrolysis, vol. 161, 105404, Elsevier BV, 2022, doi:10.1016/j.jaap.2021.105404. short: M. Wortmann, W. Keil, B. Brockhagen, J. Biedinger, M. Westphal, C. Weinberger, E. Diestelhorst, W. Hachmann, Y. Zhao, M. Tiemann, G. Reiss, B. Hüsgen, C. Schmidt, K. Sattler, N. Frese, Journal of Analytical and Applied Pyrolysis 161 (2022). date_created: 2022-01-18T06:25:06Z date_updated: 2023-03-08T08:15:24Z department: - _id: '35' - _id: '2' - _id: '307' - _id: '315' doi: 10.1016/j.jaap.2021.105404 intvolume: ' 161' keyword: - Analytical Chemistry - Fuel Technology language: - iso: eng publication: Journal of Analytical and Applied Pyrolysis publication_identifier: issn: - 0165-2370 publication_status: published publisher: Elsevier BV quality_controlled: '1' status: public title: Pyrolysis of sucrose-derived hydrochar type: journal_article user_id: '23547' volume: 161 year: '2022' ...