A novel Bi-based oxybromide SrBiO2Br: Synthesis, optical property and photocatalytic activity

被引：19

作者：

He, Ying ^{[1
]}

Huang, Hongwei ^{[1
]}

Zhang, Yihe ^{[1
]}

Li, Xiaowei ^{[1
]}

Tian, Na ^{[1
]}

Guo, Yuxi ^{[1
]}

Luo, Yi ^{[1
]}

机构：

[1] China Univ Geosci, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Beijing 100083, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2015年 / 64卷

关键词：

Oxides; Optical properties; Catalytic properties; VISIBLE-LIGHT IRRADIATION; CRYSTAL-STRUCTURE; NANOPARTICLES; WATER; OXIDATION; CATALYSTS; GRAPHENE; BI2WO6; FILMS;

D O I：

10.1016/j.materresbull.2015.01.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel Bi-based photocatalyst SrBiO2Br with layered structure was successfully synthesized via a solid state reaction method. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis diffuse reflectance spectra (DRS). SrBiO2Br has an indirect-transition optical band-gap of 2.58 eV. Density functional calculations revealed that conduction band (CB) were composed of the Bi 6p and Br 4s orbitals, and valence band (VB) were occupied by Br 4p and O 2p. The photodecomposition of rhodamine-B (RhB) experiments demonstrated SrBiO2Br can be used as photocatalysts under ultraviolet (UV) light and visible light irradiation (lambda > 400 nm). The results revealed that SrBiO2Br calcinated at 700 degrees C exhibited the highest photocatalytic activity among the obtained SrBiO2Br samples. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：405 / 409

页数：5

共 31 条

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