---
_id: '63991'
abstract:
- lang: eng
  text: A series of 1 and 2 nm sized platinum nanoparticles (Pt-NPs) deposited on
    different support materials, namely, gamma-alumina (gamma-Al2O3), titanium dioxide
    (TiO2), silicon dioxide (SiO2) and fumed silica are investigated by solid-state
    NMR and dynamic nuclear polarization enhanced NMR spectroscopy (DNP). DNP signal
    enhancement factors up to 170 enable gaining deeper insight into the surface chemistry
    of Pt-NPs. Carbon monoxide is used as a probe molecule to analyze the adsorption
    process and the surface chemistry on the supported Pt-NPs. The studied systems
    show significant catalytic activity in carbon monoxide oxidation on their surface
    at room temperature. The underlying catalytic mechanism is the water-gas shift
    reaction. In the case of alumina as the support the produced CO2 reacts with the
    surface to form carbonate, which is revealed by solid-state NMR. A similar carbonate
    formation is also observed when physical mixtures of neat alumina with silica,
    fumed silica and titania supported Pt-NPs are studied.
author:
- first_name: V.
  full_name: Klimavicius, V.
  last_name: Klimavicius
- first_name: S.
  full_name: Neumann, S.
  last_name: Neumann
- first_name: S.
  full_name: Kunz, S.
  last_name: Kunz
- first_name: Torsten
  full_name: Gutmann, Torsten
  id: '118165'
  last_name: Gutmann
- first_name: G.
  full_name: Buntkowsky, G.
  last_name: Buntkowsky
citation:
  ama: Klimavicius V, Neumann S, Kunz S, Gutmann T, Buntkowsky G. Room temperature
    CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state NMR
    and DNP spectroscopy. <i>Catalysis Science &#38; Technology</i>. 2019;9(14):3743–3752.
    doi:<a href="https://doi.org/10.1039/c9cy00684b">10.1039/c9cy00684b</a>
  apa: Klimavicius, V., Neumann, S., Kunz, S., Gutmann, T., &#38; Buntkowsky, G. (2019).
    Room temperature CO oxidation catalysed by supported Pt nanoparticles revealed
    by solid-state NMR and DNP spectroscopy. <i>Catalysis Science &#38; Technology</i>,
    <i>9</i>(14), 3743–3752. <a href="https://doi.org/10.1039/c9cy00684b">https://doi.org/10.1039/c9cy00684b</a>
  bibtex: '@article{Klimavicius_Neumann_Kunz_Gutmann_Buntkowsky_2019, title={Room
    temperature CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state
    NMR and DNP spectroscopy}, volume={9}, DOI={<a href="https://doi.org/10.1039/c9cy00684b">10.1039/c9cy00684b</a>},
    number={14}, journal={Catalysis Science &#38; Technology}, author={Klimavicius,
    V. and Neumann, S. and Kunz, S. and Gutmann, Torsten and Buntkowsky, G.}, year={2019},
    pages={3743–3752} }'
  chicago: 'Klimavicius, V., S. Neumann, S. Kunz, Torsten Gutmann, and G. Buntkowsky.
    “Room Temperature CO Oxidation Catalysed by Supported Pt Nanoparticles Revealed
    by Solid-State NMR and DNP Spectroscopy.” <i>Catalysis Science &#38; Technology</i>
    9, no. 14 (2019): 3743–3752. <a href="https://doi.org/10.1039/c9cy00684b">https://doi.org/10.1039/c9cy00684b</a>.'
  ieee: 'V. Klimavicius, S. Neumann, S. Kunz, T. Gutmann, and G. Buntkowsky, “Room
    temperature CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state
    NMR and DNP spectroscopy,” <i>Catalysis Science &#38; Technology</i>, vol. 9,
    no. 14, pp. 3743–3752, 2019, doi: <a href="https://doi.org/10.1039/c9cy00684b">10.1039/c9cy00684b</a>.'
  mla: Klimavicius, V., et al. “Room Temperature CO Oxidation Catalysed by Supported
    Pt Nanoparticles Revealed by Solid-State NMR and DNP Spectroscopy.” <i>Catalysis
    Science &#38; Technology</i>, vol. 9, no. 14, 2019, pp. 3743–3752, doi:<a href="https://doi.org/10.1039/c9cy00684b">10.1039/c9cy00684b</a>.
  short: V. Klimavicius, S. Neumann, S. Kunz, T. Gutmann, G. Buntkowsky, Catalysis
    Science &#38; Technology 9 (2019) 3743–3752.
date_created: 2026-02-07T15:47:21Z
date_updated: 2026-02-17T16:16:33Z
doi: 10.1039/c9cy00684b
extern: '1'
intvolume: '         9'
issue: '14'
keyword:
- Chemistry
- gamma-alumina
- hydrogenation
- silica
- c-13
- interactions
- metal-catalysts
- particle-size
- platinum nanoparticles
- sites
- surface
- water-gas shift
language:
- iso: eng
page: 3743–3752
publication: Catalysis Science & Technology
publication_identifier:
  issn:
  - 2044-4753
status: public
title: Room temperature CO oxidation catalysed by supported Pt nanoparticles revealed
  by solid-state NMR and DNP spectroscopy
type: journal_article
user_id: '100715'
volume: 9
year: '2019'
...
---
_id: '13324'
abstract:
- lang: eng
  text: 'The new technological enhancements and the accessibility to varieties of
    online applications, enable users to collect personal data and perform self-evaluation
    through test, comparison and experimentation. The sparked interest in numbers
    and numbers as self-representative visualisations is prominent in social networking
    sites, which are the empirical setting for the present study. This paper sets
    out to establish a multi-theoretical framework which enables the investigation
    of emerging phenomena of the role of numbers in social networking sites. The proposed
    framework rests on three theoretical pillars: self-determination theory, heuristic
    decision making and behavioural economics. A discussion departs from these convictions
    to investigate user reactions and behaviour when faced with numerical representations
    in the SNS.'
author:
- first_name: Mimmi
  full_name: Sjöklint, Mimmi
  last_name: Sjöklint
- first_name: Ioanna
  full_name: Constantiou, Ioanna
  last_name: Constantiou
- first_name: Matthias
  full_name: Trier, Matthias
  id: '72744'
  last_name: Trier
citation:
  ama: 'Sjöklint M, Constantiou I, Trier M. Numerical Representations and User Behaviour
    in Social Networking Sites: Towards a Multi- Theoretical Research Framework. In:
    <i>ECIS 2013 Proceedings</i>. Association for Information Systems. AIS Electronic
    Library (AISeL); 2013.'
  apa: 'Sjöklint, M., Constantiou, I., &#38; Trier, M. (2013). Numerical Representations
    and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research
    Framework. In <i>ECIS 2013 Proceedings</i>. Association for Information Systems.
    AIS Electronic Library (AISeL).'
  bibtex: '@inproceedings{Sjöklint_Constantiou_Trier_2013, title={Numerical Representations
    and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research
    Framework}, booktitle={ECIS 2013 Proceedings}, publisher={Association for Information
    Systems. AIS Electronic Library (AISeL)}, author={Sjöklint, Mimmi and Constantiou,
    Ioanna and Trier, Matthias}, year={2013} }'
  chicago: 'Sjöklint, Mimmi, Ioanna Constantiou, and Matthias Trier. “Numerical Representations
    and User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research
    Framework.” In <i>ECIS 2013 Proceedings</i>. Association for Information Systems.
    AIS Electronic Library (AISeL), 2013.'
  ieee: 'M. Sjöklint, I. Constantiou, and M. Trier, “Numerical Representations and
    User Behaviour in Social Networking Sites: Towards a Multi- Theoretical Research
    Framework,” in <i>ECIS 2013 Proceedings</i>, 2013.'
  mla: 'Sjöklint, Mimmi, et al. “Numerical Representations and User Behaviour in Social
    Networking Sites: Towards a Multi- Theoretical Research Framework.” <i>ECIS 2013
    Proceedings</i>, Association for Information Systems. AIS Electronic Library (AISeL),
    2013.'
  short: 'M. Sjöklint, I. Constantiou, M. Trier, in: ECIS 2013 Proceedings, Association
    for Information Systems. AIS Electronic Library (AISeL), 2013.'
date_created: 2019-09-19T12:14:55Z
date_updated: 2022-01-06T06:51:33Z
department:
- _id: '198'
keyword:
- User Behaviour
- Social Networking Sites
- Numerical Representations
- Multi-Theoretical Framework
- Quantified Self
- Pointification
language:
- iso: eng
publication: ECIS 2013 Proceedings
publication_identifier:
  isbn:
  - '9783834924421'
publisher: Association for Information Systems. AIS Electronic Library (AISeL)
status: public
title: 'Numerical Representations and User Behaviour in Social Networking Sites: Towards
  a Multi- Theoretical Research Framework'
type: conference
user_id: '62809'
year: '2013'
...