The effect of operational parameters on the photocatalytic degradation of three textile azo dyes in aqueous TiO2 suspensions

被引：249

作者：

Habibi, MH ^{[1
]}

Hassanzadeh, A ^{[1
]}

Mahdavi, S ^{[1
]}

机构：

[1] Univ Isfahan, Dept Chem, Esfahan 8174573441, Iran

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2005年 / 172卷 / 01期

关键词：

UV-photodegradation; titanium dioxide; diazo dyes;

D O I：

10.1016/j.jphotochem.2004.11.009

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：

Photocatalytic degradation of three commercial textile diazo dyes, called (C.I. Direct 80, 3BL, C.I. Direct Blue 160, RL and C.I. Reactive Yellow 2, X6G) were investigated using commercial TiO2 in aqueous solution under 40OW high-pressure mercury lamp irradiation. The effect of oxygen, temperature, catalyst loading, UV-light irradiation time, solution pH and inorganic ions such as SO42-, Cl- and NO3- were studied and optimized values were obtained. Results show that the employment of efficient photocatalyst and selection of optimal operational parameters may lead to complete decolorization and to substantial decrease of the chemical oxygen demand (COD) of dye solutions. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：89 / 96

页数：8

共 19 条

[1] The influence of FeCl3 on the photocatalytic degradation of dissolved azo dyes in aqueous TiO2 suspensions [J].