Bi5O7I/Bi2O3 composite photocatalyst with enhanced visible light photocatalytic activity

被引：34
|
作者：
Cheng, Lijun [1 ,2 ]
Kang, Yong [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
[2] Tianjin Univ Sci & Technol, Coll Mech Engn, Tianjin 300222, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2015年 / 72卷
关键词：
Bi5O7I/Bi2O3; Composite; Photocatalyst; Malachite green; Mechanism; BI2O3; HETEROJUNCTION; EFFICIENT; NANOPARTICLES;
D O I：
10.1016/j.catcom.2015.09.002
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：
A series of Bi5O7I/Bi2O3 composite photocatalysts were first synthesized via chemical etching method. Their crystalline phase, composition, light absorption ability and photoluminescence emission performance were characterized by XRD, EDX, UV-vis and PL methods, respectively. And malachite green was used as the model pollutant to investigate the visible light photocatalytic activities of the composite photocatalysts. It is found that 80.48% Bi5O7I/Bi2O3 showed the highest activity for its relatively stronger absorption ability for visible light and best separation efficiency of electron-hole pairs. Last, the photocatalytic mechanism of the Bi5O7I/Bi2O3 composite was put forward qualitatively. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：16 / 19
页数：4
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