Demineralization of organic pollutants on the dye modified TiO2 semiconductor particulate system using visible light

被引：185

作者：

Chatterjee, D ^{[1
]}

Mahata, A ^{[1
]}

机构：

[1] Cent Mech Engn Res Inst, Chem Sect, Durgapur 713209, India

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2001年 / 33卷 / 02期

关键词：

photodegradation; dye sensitization; TiO2; photocatalyst; organic pollutants; visible light; thionine; eosin Y;

D O I：

10.1016/S0926-3373(01)00170-9

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：

Photodegradation of organic pollutants, viz. phenol, chlorophenol, 1,2-dichloroethane and trichloroethylene in water has been achieved on the surface of TiO2 semiconductor modified with thionine and eosin Y by using visible light. After 5 h of irradiation with a 50 W tungsten lamp, over 55-72% degradation of pollutants is achieved. A working mechanism involving excitation of surface bound dye, followed by charge injection into the TiO2 conduction band is proposed. (C) 2001 Elsevier Science B.V All rights reserved.

引用

页码：119 / 125

页数：7

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