Photocatalytic reaction and degradation of methylene blue on TiO2 films in vacuum: an X-ray photoelectron spectroscopy study

Photocatalytic reaction and degradation of methylene blue on TiO2 films in vacuum: an X-ray... Photocatalytic reaction and degradation of methylene blue on TiO2 films illuminated by ultraviolet light in air and in vacuum were studied by X-ray photoelectron spectroscopy (XPS). The results show that TiO2 film has photocatalytic activity in high vacuum, while the oxygen-containing groups on TiO2 film play a very important role in maintaining photocatalytic reaction, a certain nitrogenous group has been removed from the methylene blue molecule to make the atomic ratio of its N and S decrease from 2.83 to 2.09, and form the intermediate reaction products containing benzene ring and N, S heterocycle, which can be degraded incompletely. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Photocatalytic reaction and degradation of methylene blue on TiO2 films in vacuum: an X-ray photoelectron spectroscopy study

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Publisher
Springer Netherlands
Copyright
Copyright © 2011 by Springer Science+Business Media B.V.
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-011-0326-7
Publisher site
See Article on Publisher Site

Abstract

Photocatalytic reaction and degradation of methylene blue on TiO2 films illuminated by ultraviolet light in air and in vacuum were studied by X-ray photoelectron spectroscopy (XPS). The results show that TiO2 film has photocatalytic activity in high vacuum, while the oxygen-containing groups on TiO2 film play a very important role in maintaining photocatalytic reaction, a certain nitrogenous group has been removed from the methylene blue molecule to make the atomic ratio of its N and S decrease from 2.83 to 2.09, and form the intermediate reaction products containing benzene ring and N, S heterocycle, which can be degraded incompletely.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jun 16, 2011

References

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