Synergism and effect of operational parameters on solar photocatalytic degradation of an azo dye (Direct Yellow 4) using activated carbon-loaded zinc oxide

被引：50
作者：
Sobana, N. [1 ]
Krishnakumar, B. [1 ]
Swaminathan, M. [1 ]
机构：
[1] Annamalai Univ, Dept Chem, Photocatalysis Lab, Annamalainagar 608002, Tamil Nadu, India
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2013年 / 16卷 / 03期
关键词：
Direct Yellow 4; Photocatalysis; Activated carbon; Solar light; Synergistic effect; ZNO; PHARMACEUTICALS; KINETICS; WATER; TIO2;
D O I：
10.1016/j.mssp.2013.01.002
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The photocatalytic degradation of an azo dye Direct Yellow 4 (DY 4) using Activated Carbon loaded ZnO (AC-ZnO) as a photocatalyst in aqueous solution has been investigated under solar irradiation. Among the activated carbons loaded from three different sources, commercial AC (AC(SD)) loaded ZnO was found to be more efficient in the degradation of Direct Yellow 4 (DY 4) in solar light. The effects of operational parameters such as pH of the solution, amount of catalyst, initial dye concentration and effect of grinding for AC(SD) loading on photodegradation of DY 4 were analyzed. The degradation of DY 4 follows pseudo-first order kinetics according to the Langmuir-Hinshelwood model. Synergistic effect of AC(SD)-ZnO is shown by the synergistic factor of 2.0. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1046 / 1051
页数：6
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