Investigation of photocatalytic activities over ZnO-TiO2-reduced graphene oxide composites synthesized via microwave-assisted reaction

被引：59
作者：
Liu, Xinjuan [1 ]
Pan, Likun [1 ]
Lv, Tian [1 ]
Sun, Zhuo [1 ]
机构：
[1] E China Normal Univ, Dept Phys, Minist Educ, Engn Res Ctr Nanophoton & Adv Instrument, Shanghai 200062, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2013年 / 394卷
基金：
中国国家自然科学基金;
关键词：
Microwave-assisted reaction; ZnO-TiO2-reduced graphene oxide; Photocatalysis; H-2-PRODUCTION ACTIVITY; REDUCTION; TIO2; NANOCOMPOSITES; PERFORMANCE; FILMS; UV;
D O I：
10.1016/j.jcis.2012.11.047
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
ZnO-TiO2-reduced graphene oxide (RGO) composites were successfully synthesized by microwave-assisted reduction of graphite oxide in ZnO precursor solution with TiO2 suspension using a microwave synthesis system. Their morphology, structure, and photocatalytic performance in the reduction of Cr(VI) were characterized by scanning electron microscopy, X-ray diffraction spectroscopy, and UV-vis absorption spectrophotometer. The results show that ZnO-TiO2-RGO composites exhibit an enhanced photocatalytic performance in reduction of Cr(VI) with a maximum removal rate of 99.4% under UV light irradiation as compared with pure ZnO (58%) and ZnO-RGO (98%) composites due to the increased light absorption intensity and the reduction of electron-hole pair recombination in ZnO with the introduction of TiO2. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码：441 / 444
页数：4
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