In situ anion-exchange synthesis and photocatalytic activity of AgBr/Ag2O heterostructure

被引：30
作者：
Cao, Yuhui [1 ]
Li, Qiuye [1 ]
Xing, Yangyang [1 ]
Zong, Lanlan [1 ]
Yang, Jianjun [1 ]
机构：
[1] Henan Univ, Key Lab Special Funct Mat, Kaifeng 475004, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 341卷
基金：
中国国家自然科学基金;
关键词：
AgBr; Ag2O; Heterostructure; Photocatalytic; Methyl orange; Visible light; EFFICIENT PHOTODEGRADATION; ROOM-TEMPERATURE; GROWTH; NANOPARTICLES; ENHANCEMENT; DEGRADATION; FABRICATION; COMPOSITES; STABILITY; AGBR/TIO2;
D O I：
10.1016/j.apsusc.2015.02.174
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：
AgBr/Ag2O heterostructure photocatalysts were synthesized by a simple in situ anion-exchange route. The ratio of AgBr and Ag2O in the composites could be easily controlled by adjusting the concentration of NaBr solution. The AgBr/Ag2O-5 heterostructure exhibited a much higher photocatalytic activity than the pure AgBr and Ag2O particles in photodegradation of methyl orange (MO) under visible light irradiation. On the basis of the characterization by X-ray diffraction, photoluminescence (XRD), X-ray photoelectron spectroscope (XPS), and UV-vis diffuse reflectance spectra (DRS), a mechanism was proposed to account for the enhanced photocatalytic activity of AgBr/Ag2O heterostructure. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：190 / 195
页数：6
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