Photodegradation of a herbicide derivative, 2,4-dichlorophenoxy acetic acid in aqueous suspensions of titanium dioxide |
| |
| Authors: | H K Singh M Muneer |
| |
| Affiliation: | (1) Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India;(2) Centre of Excellence in Nanotechnology (CENT), King Fahad University of Petroleum and Minerals (KFUPM), Box 741, Dhahran, Saudi Arabia;(3) Institut f?r Technische Chemie, Universit?t Hannover, Callinstr. 3, 30167 Hannover, Germany |
| |
| Abstract: | The photocatalytic degradation of a herbicide derivative, 2,4-dichlorophenoxy acetic acid (2,4-D, 1), has been investigated in aqueous suspensions of titanium dioxide. The degradation was studied by monitoring the change in substrate concentration employing UV spectroscopic analysis and decrease in Total Organic Carbon (TOC) content as a function of irradiation time in the presence of UV light source. The degradation kinetics was investigated under a variety of conditions, such as different types of TiO2, pH, catalyst and substrate concentrations. Higher photonic efficiencies were observed with Degussa P25 as compared with other photocatalysts. The degradation products were analysed by GC-MS and probable pathways for the formation of different products were proposed. |
| |
| Keywords: | PHOTOCATALYSIS DEGRADATION HERBICIDE 2 4-DICHLOROPHENOXY ACETIC ACID TITANIUM DIOXIDE. |
| 本文献已被 SpringerLink 等数据库收录！ |
|
