Effect of repeated photo-illumination on the wettability conversion of titanium dioxide

被引：90

作者：

Nakajima, A ^{[1
]}

Koizumi, S ^{[1
]}

Watanabe, T ^{[1
]}

Hashimoto, K ^{[1
]}

机构：

[1] Univ Tokyo, Adv Sci & Technol Res Ctr, Meguro Ku, Tokyo 1538904, Japan

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2001年 / 146卷 / 1-2期

关键词：

photo-catalyst; titanium dioxide; contact angle; wettability;

D O I：

10.1016/S1010-6030(01)00544-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of the repeated UV illumination on the photo-induced wettability conversion of TiO2 surface was investigated using rutile single crystal. The hydrophilicizing rate was increased by the repeated UV illumination and this effect was more remarkable on (001) than (110) surface. This crystal plane dependence can be attributed to the differences of the efficiencies of oxygen vacancy creation and the degrees of resultant structural distortion between these two surfaces. These data suggest that the hydrophilicizing process of TiO2 is a kind of photo-corrosion process occurring at the surface. (C) 2001 Published by Elsevier Science B.V.

引用

页码：129 / 132

页数：4

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