Selective photocatalytic oxidation of benzyl alcohol and its derivatives into corresponding aldehydes by molecular oxygen on titanium dioxide under visible light irradiation

被引：284

作者：

Higashimoto, Shinya ^{[1
]}

Kitao, Naoya ^{[1
]}

Yoshida, Norio ^{[1
]}

Sakura, Teruki ^{[2
]}

Azuma, Masashi ^{[1
]}

Ohue, Hiroyoshi ^{[1
]}

Sakata, Yoshihisa ^{[2
]}

机构：

[1] Osaka Inst Technol, Coll Engn, Asahi Ku, Osaka 5358585, Japan

[2] Yamaguchi Univ, Grad Sch Sci & Engn, Ube, Yamaguchi 7558611, Japan

来源：

JOURNAL OF CATALYSIS | 2009年 / 266卷 / 02期

关键词：

Selective photocatalytic oxidation; Titanium dioxide; Alcohol oxidation; Benzyl alcohol; Benzaldehyde; Visible light; Quantum yields; AQUEOUS SUSPENSION; AROMATIC ALCOHOLS; TIO2;

D O I：

10.1016/j.jcat.2009.06.018

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 photocatalytic oxidation of benzyl alcohol and its derivatives, such as 4-methoxybenzyl alcohol, 4-chlorobenzyl alcohol, 4-nitrobenzyl alcohol, 4-methylbenzyl alcohol, 4-(trifluoromethyl)benzyl alcohol, and 4-tertiary-butylbenzyl alcohol, into corresponding aldehydes proceeded at high conversion and selectivity on a TiO2 photocatalyst under O-2 atmosphere. The reaction was confirmed to proceed under irradiation with both UV-light and visible light. In particular, the visible light response was observed to be attributed to a characteristic surface complex formed by the adsorption of a benzyl alcoholic compound on the TiO2 surface. Here, the properties of the surface complex as the active center for this selective photocatalytic oxidation and the mechanism behind the reaction have been investigated. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：279 / 285

页数：7

共 22 条

[1] Environmentally Friendly Photocatalytic Oxidation of Aromatic Alcohol to Aldehyde in Aqueous Suspension of Brookite TiO2 [J].