Effect of activated carbon content in TiO2-loaded activated carbon on photodegradation behaviors of dichloromethane

被引：188

作者：

Torimoto, T ^{[1
]}

Okawa, Y ^{[1
]}

Takeda, N ^{[1
]}

Yoneyama, H ^{[1
]}

机构：

[1] OSAKA UNIV,FAC ENGN,DEPT APPL CHEM,SUITA,OSAKA 565,JAPAN

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1997年 / 103卷 / 1-2期

关键词：

activated carbon; photodegradation; dichloromethane; TiO2; photocatalyst;

D O I：

10.1016/S1010-6030(96)04503-0

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 amount of TiO2 loading on activated carbon support on the photodecomposition of dichloromethane was studied. The apparent adsorption constant of the TiO2-loaded activated carbon for dichloromethane was found to decrease with increase of the fraction of the loaded TiO2. It was found that the apparent rate constant of CO2 evolution became small with increase of the activated carbon content, suggesting that the adsorbed substrate on the activated carbon support was not easily involved in the photodecomposition reaction. However, the use of mixed suspensions of TiO2 and activated carbon showed lower activities than the TiO2-loaded activated carbon for photodegradation of dichloromethane. The role of the activated carbon support in the photodecomposition of dichloromethane is discussed. (C) 1997 Elsevier Science S.A.

引用

页码：153 / 157

页数：5

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