Degradation of textile dye by solar light using TiO2 and ZnO photocatalysts

被引：58
|
作者：
Neppolian, B [1 ]
Sakthivel, S [1 ]
Arabindoo, B [1 ]
Palanichamy, M [1 ]
Murugesan, V [1 ]
机构：
[1] Anna Univ, Dept Chem, Chennai 600025, India
来源：
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING | 1999年 / 34卷 / 09期
关键词：
textile dye; degradation; photocatalyst; solar light; water reuse;
D O I：
10.1080/10934529909376931
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The photocatalytic degradation of a textile dye, reactive red 2 in presence of sunlight using TiO2 and ZnO as photocatalysts is reported. The experimental studies have indicated complete decolourisation of the dye in a short period and degradation within 8 hr of irradiation. ZnO was found to be more effective in the removal of colour than TiO2, but the degradation efficiency was found to be more with TiO2. ZnO decomposes on prolonged irradiation while TiO2 is not photocorrosive. The percent degradation of the dye is high for both the catalysts at an optimum concentration of the catalysts. The first order rate constant is found to increase with decreasing dye concentration.
引用
收藏
页码：1829 / 1838
页数：10
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