High photocatalytic and photo-Fenton-like activities of ZnO-reduced graphene oxide nanocomposites in the degradation of malachite green in water

被引：18
作者：
He, H. -Y. [1 ]
Fei, J. [1 ]
Lu, J. [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Coll Mat Sci & Engn, Xian 710021, Shaanxi, Peoples R China
来源：
MICRO & NANO LETTERS | 2015年 / 10卷 / 08期
关键词：
photochemistry; catalysis; nanocomposites; graphene; zinc compounds; organic compounds; crystal growth from solution; photocatalytic activities; ZnO-reduced graphene oxide nanocomposites; malachite green degradation; water; hydrothermal method; pH; Fenton-like photodegradation; quasikinetic rate constants; photocatalysis systems; Fenton-like reaction; ZnO-CO; WET PEROXIDE OXIDATION; SELECTIVE TRANSFORMATION; THIN-FILMS; AZO-DYE; CATALYST; TIO2; PHOTODEGRADATION; PHOTOACTIVITY; NANOPARTICLES; IRRADIATION;
D O I：
10.1049/mnl.2014.0551
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
ZnO-reduced graphene oxide (rGO) nanocomposites with rGO/ZnO mass ratio of 0-0.20 were synthesised by a hydrothermal method. The photodegradation experiments of malachite green in water on the nanocomposites indicated that the photodegradation rate increased with increasing rGO content and initial solution pH. Significantly, the Fenton-like photodegradation of the malachite green in water was observed in the presence of H2O2. This Fenton-like reaction speeds up as the rGO/ZnO ratio increases. The quasi-kinetic rate constants of the photocatalysis systems are in the range of similar to 0.0064-0.0247 min(-1) and increase about one magnitude to similar to 0.0868-0.2120 min(-1) by the Fenton-like reaction.
引用
收藏
页码：389 / 394
页数：6
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