Graphene Oxide/BiOCl Nanocomposite Films as Efficient Visible Light Photocatalysts

被引：37
作者：
Lin, Weitian [1 ]
Yu, Xiang [2 ]
Zhu, Yi [1 ]
Zhang, Yuanming [1 ]
机构：
[1] Jinan Univ, Dept Chem, Guangzhou, Guangdong, Peoples R China
[2] Jinan Univ, Analyt & Testing Ctr, Guangzhou, Guangdong, Peoples R China
来源：
FRONTIERS IN CHEMISTRY | 2018年 / 6卷
基金：
中国国家自然科学基金;
关键词：
graphene; BiOCl; film; visible-light; photocatalytic activity; IN-SITU SYNTHESIS; DOMINANT; 001; FACETS; ONE-POT SYNTHESIS; PERFORMANCE; OXIDE; BIOCL; HETEROJUNCTION; COMPOSITE; MICROSPHERES; NANOSHEETS;
D O I：
10.3389/fchem.2018.00274
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel graphene oxide/BiOCl (GO/BiOCl) nanocomposite film was prepared via a spread coating method. In visible-light photocatalytically degrading Rhodamine B (RhB) experiments, 2 wt% GO/BiOCl could degrade 99% of RhB within 1.5 h and the rate constant was 12.2 times higher than that of pure BiOCl. The degradation efficiency still kept at 80% even after 4 recycles, evidencing the relatively good recyclability. The enhancement was attributed to the improvement of visible light adsorption and charge separation. Holes and superoxide radicals. O-2(-) played a major role as reactive species. The values of conduction band and valence band for GO and BiOCl were calculated and a new photocatalytic mechanism of GO/BiOCl nanocomposite was proposed.
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页数：13
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