Effect of the acidity of TiO2 surface on its photocatalytic activity in acetone gas-phase oxidation

被引：42

作者：

Kozlov, D ^{[1
]}

Bavykin, D ^{[1
]}

Savinov, E ^{[1
]}

机构：

[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

来源：

CATALYSIS LETTERS | 2003年 / 86卷 / 04期

基金：

俄罗斯基础研究基金会;

关键词：

titanium dioxide; acetone; photocatalytic degradation; surface acidity;

D O I：

10.1023/A:1022651615366

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 surface acidity of modified TiO2 samples on the rate of photocatalytic decomposition of acetone vapor was studied. The TiO2 activity was shown to depend strongly on the concentration of acid and basic sites on the surface. It was 1.23 times greater for TiO2 treated with 10 M H2SO4 solution than for the untreated sample. This dependence may be related to changes in the adsorption energy of the reagents.

引用

页码：169 / 172

页数：4

共 8 条

[1]

Fujishima A., 1999, TIO2 PHOTOCATALYSIS

[2]

KOVALENKO GA, 1998, ZAVOD LAB DIAGNOST M, V65, P43

[3] The comparative studies of titanium dioxide in gas-phase ethanol photocatalytic oxidation by the FTIR in situ method [J].