One-step synthesis of flower-like Ag/AgCl/BiOCl composite with enhanced visible-light photocatalytic activity

被引:128
|
作者
Xiong, Wei [1 ,2 ]
Zhao, Qidong [1 ,2 ]
Li, Xinyong [1 ,2 ,3 ]
Zhang, Dongke [3 ]
机构
[1] Dalian Univ Technol, Key Lab Ind Ecol & Environm Engn MOE, Sch Environm Sci & Technol, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, State Key Lab Fine Chem, Sch Environm Sci & Technol, Dalian 116024, Peoples R China
[3] Univ Western Australia, Ctr Energy, Crawley, WA 6009, Australia
基金
国家高技术研究发展计划(863计划);
关键词
Ag/AgCl/BiOCl; Visible light; Photocatalysis; Rhodamine B; STABLE PHOTOCATALYST; DEGRADATION; UV; PHOTODEGRADATION; POLLUTANTS; OXIDATION; EFFICIENT; BIOCL; DYE;
D O I
10.1016/j.catcom.2011.09.027
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
The flower-like Ag/AgCl/BiOCl composite was prepared by a one-step chemical bath method at low temperature for the first time. The morphology, crystallinity, composition, and optical property were well characterized by scanning electron microscope, X-ray diffraction, energy dispersive X-ray analysis, UV-vis diffuse reflectance spectrophotometer and nitrogen adsorption-desorption. The Ag/AgCl/BiOCl composite displayed enhanced visible-light photocatalytic activity against rhodamine B, which was much higher than Ag/AgCl or BiOCl. The mechanism for the degradation of rhodamine B over the Ag/AgCl/BiOCl was discussed. The superoxide radical and chlorine radical or the hole played critical roles instead of hydroxyl radicals. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:229 / 233
页数:5
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