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

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

doi:10.1117/12.2239261

Details

Original language	English
Title of host publication	Solar Hydrogen and Nanotechnology XI
Editors	Chung-Li Dong
ISBN (electronic)	9781510602618
Publication status	Published - 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9935
ISSN (Print)	0277-786X
ISSN (electronic)	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.

Keywords

Acetaldehyde degradation, Charge transfer, Kinetics, Laser-flash-photolysis-spectroscopy, Photocatalysis, Semiconductor, Laser-Flash-Photolysis-Spectroscopy, semiconductor, photocatalysis, kinetics, acetaldehyde degradation, charge transfer

ASJC Scopus subject areas

Materials Science(all)
Electronic, Optical and Magnetic Materials
Physics and Astronomy(all)
Condensed Matter Physics
Mathematics(all)
Applied Mathematics
Engineering(all)
Electrical and Electronic Engineering
Computer Science(all)
Computer Science Applications

Cite this

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. ed. / Chung-Li Dong. 2016. 99350G (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9935).

Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › 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 (ed.), Solar Hydrogen and Nanotechnology XI., 99350G, Proceedings of SPIE - The International Society for Optical Engineering, vol. 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 (Ed.), Solar Hydrogen and Nanotechnology XI Article 99350G (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 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, editor, 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. editor / Chung-Li Dong. 2016. (Proceedings of SPIE - The International Society for Optical Engineering).

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Research@Leibniz University