Adsorption-driven photocatalytic activity of mesoporous titanium dioxide

被引：263

作者：

Shiraishi, Y ^{[1
]}

Saito, N

Hirai, T

机构：

[1] Osaka Univ, Grad Sch Engn Sci, Res Ctr Solar Energy Chem, Toyonaka, Osaka 5608531, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Div Chem Engn, Toyonaka, Osaka 5608531, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 37期

关键词：

D O I：

10.1021/ja053265s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Titanium dioxide with a mesoporous structure, when photoactivated in water, demonstrates an unprecedented photocatalytic activity, driven strongly by an adsorption degree of molecules onto the catalyst surface, which promotes a preferential conversion of a well-adsorbed molecule. This catalyzes a selective transformation of a well-adsorbed molecule into a less-adsorbed molecule, so-labeled "stick-and-leave" transformation, which promotes a direct hydroxylation of benzene to phenol, one of the most difficult synthetic reactions, with very high selectivity (> 80%) and using water as a source of oxidant. Copyright © 2005 American Chemical Society.

引用

页码：12820 / 12822

页数：3

共 31 条

[1] KINETIC-STUDIES IN HETEROGENEOUS PHOTOCATALYSIS .2. TIO2-MEDIATED DEGRADATION OF 4-CHLOROPHENOL ALONE AND IN A 3-COMPONENT MIXTURE OF 4-CHLOROPHENOL, 2,4-DICHLOROPHENOL, AND 2,4,5-TRICHLOROPHENOL IN AIR-EQUILIBRATED AQUEOUS-MEDIA [J].