Comparative photocatalytic study of two selected pesticide derivatives, indole-3-acetic acid and indole-3-butyric acid in aqueous suspensions of titanium dioxide

被引：52

作者：

Qamar, M ^{[1
]}

Muneer, M ^{[1
]}

机构：

[1] Aligarh Muslim Univ, Dept Chem, Aligarh 202002, Uttar Pradesh, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2005年 / 120卷 / 1-3期

关键词：

photocatalysis; indole-3-acetic acid; indole-3-butyric acid; titanium dioxide;

D O I：

10.1016/j.jhazmat.2005.01.005

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Heterogeneous photocatalysed degradation of two selected pesticide derivatives such as indole-3-acetic acid (IAA) and indole-3-butyric acid (IBA) has been investigated in aqueous suspensions of titanium dioxide by monitoring the change in substrate concentration employing UV spectroscopic analysis technique and depletion in total organic carbon (TOC) content as a function of irradiation time. The degradation kinetics was studied under different conditions such as pH, types of TiO2. substrate and catalyst concentration, and in the presence of electron acceptor such as hydrogen peroxide (H2O2) besides molecular oxygen. The degradation rates were found to be strongly influenced by all the above parameters. The photocatalyst Degussa P25 showed comparatively highest photocatalytics. The pesticide derivative, indole-3-acetic acid was found to degrade slightly faster than indole-3-butyric acid. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：219 / 227

页数：9

共 20 条

[1] Photocatalysis in water environments using artificial and solar light [J].