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Surface Electrical Measurements of Photo-catalysis on Rutile TiO2(11O)

Published online by Cambridge University Press:  11 February 2011

Kiyohiro Kaisei ,
Kenji Ishida ,
Toshihisa Horiuchi  and
Kazumi Matsushige
Kiyohiro Kaisei
Affiliation:
Kyoto University, Dept of Electronic Science and Engineering, Kyoto, Japan
Kenji Ishida
Affiliation:
Kyoto University, Dept of Electronic Science and Engineering, Kyoto, Japan
Toshihisa Horiuchi
Affiliation:
Kyoto University, Dept of Electronic Science and Engineering, Kyoto, Japan
Kazumi Matsushige
Affiliation:
Kyoto University, Dept of Electronic Science and Engineering, Kyoto, Japan
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Abstract

We have studied the electronic properties of single crystal rutile TiO2(110) with surface electrical techniques; impedance spectroscopy and high sensitivity DC measurements. In the impedance spectroscopy we observed a spectrum involved in the dissociation of pure water on the TiO2 surface under UV irradiation. In the high sensitivity DC measurements we observed oscillations of the surface photo-current with three different long periodicities, which might have originated from the oxidation and reduction processes of water on TiO2 via photo-catalytic reactions induced by UV irradiation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 751: Symposium Z – Structure-Property Relationships of Oxide Surfaces and Interfaces II , 2002 , Z3.49
Copyright
Copyright © Materials Research Society 2003

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References

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