Understanding charge transfer processes on metal oxides - A laser-flash-photolysis study

Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review

Autorschaft

  • F. Sieland
  • J. Schneider
  • T. Lippmann
  • D.W. Bahnemann

Organisationseinheiten

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Details

OriginalspracheEnglisch
Titel des SammelwerksSolar Hydrogen and Nanotechnology XI
Herausgeber/-innenChung-Li Dong
ISBN (elektronisch)9781510602618
PublikationsstatusVeröffentlicht - 2016

Publikationsreihe

NameProceedings of SPIE - The International Society for Optical Engineering
Band9935
ISSN (Print)0277-786X
ISSN (elektronisch)1996-756X

Abstract

In the focus of this study, mixtures of commercially available TiO 2 powders were created and their photocatalytic activity concerning the acetaldehyde degradation in the gas phase was tested. Further, the lifetime of the photogenerated charge carriers was analyzed by Laser-Flash-Photolysis-Spectroscopy. The acetaldehyde degradation experiments of the mixed powders lead to positive and negative deviations from the expected weighted mean. Nevertheless, their photocatalytic activity could be correlated with the lifetime of the charge carriers. A longer charge carrier lifetime at ambient conditions correlated with a lower fractional conversion of acetaldehyde. The advantageous activities of the samples were associated with a charge transfer reaction between larger and smaller particles comparable to the antenna mechanism.

ASJC Scopus Sachgebiete

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Understanding charge transfer processes on metal oxides - A laser-flash-photolysis study. / Sieland, F.; Schneider, J.; Lippmann, T. et al.
Solar Hydrogen and Nanotechnology XI. Hrsg. / Chung-Li Dong. 2016. 99350G (Proceedings of SPIE - The International Society for Optical Engineering; Band 9935).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review

Sieland, F, Schneider, J, Lippmann, T & Bahnemann, DW 2016, Understanding charge transfer processes on metal oxides - A laser-flash-photolysis study. in C-L Dong (Hrsg.), Solar Hydrogen and Nanotechnology XI., 99350G, Proceedings of SPIE - The International Society for Optical Engineering, Bd. 9935. https://doi.org/10.1117/12.2239261
Sieland, F., Schneider, J., Lippmann, T., & Bahnemann, D. W. (2016). Understanding charge transfer processes on metal oxides - A laser-flash-photolysis study. In C.-L. Dong (Hrsg.), Solar Hydrogen and Nanotechnology XI Artikel 99350G (Proceedings of SPIE - The International Society for Optical Engineering; Band 9935). https://doi.org/10.1117/12.2239261
Sieland F, Schneider J, Lippmann T, Bahnemann DW. Understanding charge transfer processes on metal oxides - A laser-flash-photolysis study. in Dong CL, Hrsg., Solar Hydrogen and Nanotechnology XI. 2016. 99350G. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2239261
Sieland, F. ; Schneider, J. ; Lippmann, T. et al. / Understanding charge transfer processes on metal oxides - A laser-flash-photolysis study. Solar Hydrogen and Nanotechnology XI. Hrsg. / Chung-Li Dong. 2016. (Proceedings of SPIE - The International Society for Optical Engineering).
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abstract = "In the focus of this study, mixtures of commercially available TiO 2 powders were created and their photocatalytic activity concerning the acetaldehyde degradation in the gas phase was tested. Further, the lifetime of the photogenerated charge carriers was analyzed by Laser-Flash-Photolysis-Spectroscopy. The acetaldehyde degradation experiments of the mixed powders lead to positive and negative deviations from the expected weighted mean. Nevertheless, their photocatalytic activity could be correlated with the lifetime of the charge carriers. A longer charge carrier lifetime at ambient conditions correlated with a lower fractional conversion of acetaldehyde. The advantageous activities of the samples were associated with a charge transfer reaction between larger and smaller particles comparable to the antenna mechanism. ",
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AU - Sieland, F.

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AU - Lippmann, T.

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N1 - Publisher Copyright: © 2016 SPIE. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

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N2 - In the focus of this study, mixtures of commercially available TiO 2 powders were created and their photocatalytic activity concerning the acetaldehyde degradation in the gas phase was tested. Further, the lifetime of the photogenerated charge carriers was analyzed by Laser-Flash-Photolysis-Spectroscopy. The acetaldehyde degradation experiments of the mixed powders lead to positive and negative deviations from the expected weighted mean. Nevertheless, their photocatalytic activity could be correlated with the lifetime of the charge carriers. A longer charge carrier lifetime at ambient conditions correlated with a lower fractional conversion of acetaldehyde. The advantageous activities of the samples were associated with a charge transfer reaction between larger and smaller particles comparable to the antenna mechanism.

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