Photoreduction of Mesoporous In2O3: Mechanistic Model and Utility in Gas Sensing
T. Wagner, C.-D. Kohl, S. Morandi, C. Malagù, N. Donato, M. Latino, G. Neri, M. Tiemann, Chemistry - A European Journal (2012) 8216–8223.
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Journal Article
| Published
| English
Author
Wagner, Thorsten;
Kohl, Claus-Dieter;
Morandi, Sara;
Malagù, Cesare;
Donato, Nicola;
Latino, Mariangela;
Neri, Giovanni;
Tiemann, MichaelLibreCat 
Department
Abstract
A model is proposed for the drop in electronic resistance of n-type semiconducting indium oxide (In2O3) upon illumination with light (350 nm, 3.5 eV) as well as for the (light-enhanced) sensitivity of In2O3 to oxidizing gases. Essential features of the model are photoreduction and a rate-limiting oxygen-diffusion step. Ordered, mesoporous In2O3 with a high specific surface area serves as a versatile system for experimental studies. Analytical techniques comprise conductivity measurements under a controlled atmosphere (synthetic air, pure N2) and temperature-resolved in-situ Fourier transform infrared (FTIR) spectroscopy. IR measurements reveal that oxygen vacancies form a donor level 0.18 eV below the conduction band.
Publishing Year
Journal Title
Chemistry - A European Journal
Page
8216-8223
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LibreCat-ID
Cite this
Wagner T, Kohl C-D, Morandi S, et al. Photoreduction of Mesoporous In2O3: Mechanistic Model and Utility in Gas Sensing. Chemistry - A European Journal. Published online 2012:8216-8223. doi:10.1002/chem.201103905
Wagner, T., Kohl, C.-D., Morandi, S., Malagù, C., Donato, N., Latino, M., Neri, G., & Tiemann, M. (2012). Photoreduction of Mesoporous In2O3: Mechanistic Model and Utility in Gas Sensing. Chemistry - A European Journal, 8216–8223. https://doi.org/10.1002/chem.201103905
@article{Wagner_Kohl_Morandi_Malagù_Donato_Latino_Neri_Tiemann_2012, title={Photoreduction of Mesoporous In2O3: Mechanistic Model and Utility in Gas Sensing}, DOI={10.1002/chem.201103905}, journal={Chemistry - A European Journal}, author={Wagner, Thorsten and Kohl, Claus-Dieter and Morandi, Sara and Malagù, Cesare and Donato, Nicola and Latino, Mariangela and Neri, Giovanni and Tiemann, Michael}, year={2012}, pages={8216–8223} }
Wagner, Thorsten, Claus-Dieter Kohl, Sara Morandi, Cesare Malagù, Nicola Donato, Mariangela Latino, Giovanni Neri, and Michael Tiemann. “Photoreduction of Mesoporous In2O3: Mechanistic Model and Utility in Gas Sensing.” Chemistry - A European Journal, 2012, 8216–23. https://doi.org/10.1002/chem.201103905.
T. Wagner et al., “Photoreduction of Mesoporous In2O3: Mechanistic Model and Utility in Gas Sensing,” Chemistry - A European Journal, pp. 8216–8223, 2012, doi: 10.1002/chem.201103905.
Wagner, Thorsten, et al. “Photoreduction of Mesoporous In2O3: Mechanistic Model and Utility in Gas Sensing.” Chemistry - A European Journal, 2012, pp. 8216–23, doi:10.1002/chem.201103905.
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