Synthesis and characterization of Ag/AgBrO3 photocatalyst with high photocatalytic activity

被引：11
|
作者：
Song, Limin [1 ,2 ]
Li, Tongtong [1 ,2 ]
Zhang, Shujuan [3 ]
机构：
[1] Tianjin Polytech Univ, Coll Environm & Chem Engn, Tianjin 300387, Peoples R China
[2] Tianjin Polytech Univ, State Key Lab Hollow Fiber Membrane Mat & Membran, Tianjin 300387, Peoples R China
[3] Tianjin Univ Sci & Technol, Coll Sci, Tianjin 300457, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2016年 / 182卷
关键词：
Ag/AgBrO3; semiconductor; Photodegradation; Rhodamine B; (OH)-O-center dot radicals; O-center dot(2)- radicals; VISIBLE-LIGHT; MECHANISM; SEMICONDUCTOR; IRRADIATION; PERFORMANCE; AG3PO4; TIO2;
D O I：
10.1016/j.matchemphys.2016.07.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new Ag/AgBrO3 photocatalyst was prepared by mixing aqueous solutions of AgNO3 and NaBrO3. The catalyst's structure and performance were investigated with X-ray powder diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. The UV-vis absorption spectrum of Ag/AgBrO3 exhibits a band gap of 3.97 eV. The results show that the Ag/AgBrO3 semiconductor can be excited by ultraviolet-visible light. The photodegradation of Rhodamine B displayed much higher photocatalytic activity than that of N-doped TiO2 under the same experimental conditions. Moreover, (OH)-O-center dot and center dot O-2(-) generated in the photocatalysis played a key role of the photodegradation of Rhodamine B. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：119 / 124
页数：6
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