Photoinduced changes of adsorbed water on a TiO2 photocatalytic film as studied by 1H NMR spectroscopy

被引：89

作者：

Nosaka, AY ^{[1
]}

Kojima, E

Fujiwara, T

Yagi, H

Akutsu, H

Nosaka, Y

机构：

[1] Nagaoka Univ Technol, Dept Chem, Nagaoka, Niigata 9402188, Japan

[2] TOTO Ltd, Res Inst, Kanagawa 2538577, Japan

[3] Osaka Univ, Inst Prot Res, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2003年 / 107卷 / 44期

关键词：

D O I：

10.1021/jp035526v

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 enhancement of the signal intensity of water molecularly adsorbed on TiO2 films could be observed on UV irradiation by H-1 NMR spectroscopy, which has been difficult to elucidate so far with alternative spectroscopic techniques such as X-ray photoelectron spectroscopy (XPS), temperature programmed desorption (TPD), and infrared reflection absorption spectroscopy (IRAS). It was also confirmed that the enhanced NMR signals resulted from the photoinduced hydrophilic conversion of the film surface decreased back to the original state with the recovery to the less hydrophilic state of the TiO2 film surface when the film was kept in the dark.

引用

页码：12042 / 12044

页数：3

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