Direct observation of reactive trapped holes in TiO2 undergoing photocatalytic oxidation of adsorbed alcohols:: Evaluation of the reaction rates and yields

被引：307

作者：

Tamaki, Y ^{[1
]}

Furube, A ^{[1
]}

Murai, M ^{[1
]}

Hara, K ^{[1
]}

Katoh, R ^{[1
]}

Tachiya, M ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2006年 / 128卷 / 02期

关键词：

D O I：

10.1021/ja055866p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To investigate the primary process of photocatalytic oxidation of TiO2, interfacial charge-transfer reaction of trapped holes formed in nanocrystalline TiO2 films by UV irradiation was directly measured by highly sensitive femtosecond and nanosecond transient absorption spectroscopy under low intensity excitation condition to avoid fast electron-hole recombination. Accordingly, the rates and yields of photocatalytic oxidation of several alcohols adsorbed on TiO2 were evaluated successfully. Copyright © 2006 American Chemical Society.

引用

页码：416 / 417

页数：2

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