An efficient reusable and antiphotocorrosive nano ZnO for the mineralization of Reactive Orange 4 under UV-A light

被引：76
|
作者：
Velmurugan, R. [1 ]
Selvam, K. [1 ]
Krishnakumar, B. [1 ]
Swaminathan, M. [1 ]
机构：
[1] Annamalai Univ, Dept Chem, Annamalainagar 608002, Tamil Nadu, India
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2011年 / 80卷 / 01期
关键词：
ZnO nanocrystals; Reactive Orange 4; UV-A light (300-400 nm); Antiphotocorrosion; Photocatalysis; PHOTOCATALYTIC DEGRADATION; AZO-DYE; PHOTODEGRADATION; TIO2; ELECTRON;
D O I：
10.1016/j.seppur.2011.04.018
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
ZnO nanocrystals have been synthesized by thermal decomposition of zinc oxalate without using any additives or solvent and characterized by XRD, BET, FE-SEM, DRS and HR-TEM techniques. The XRD analysis showed that the synthesized catalyst has hexagonal wurtzite type polycrystalline structure. HR-TEM analysis revealed the formation of ZnO nanocrystals and the increase in size of ZnO nanoparticle from 40 to 100 nm during the formation. FE-SEM indicates the presence of a nano chain like structures. Nano ZnO is more advantageous than commercial ZnO in the degradation of RO 4 because (i) it has maximum efficiency at pH 7, (ii) its antiphotocorrosion property is higher than commercial ZnO, (iii) it is stable and reusable. The mineralization of Reactive Orange 4 was also confirmed by TOC analysis. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：119 / 124
页数：6
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