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

页码：190 / 195

页数：6

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