Controlled hydrothermal synthesis of bismuth oxybromides and their photocatalytic properties

被引：77

作者：

Chen, Hong-Lin ^{[1
]}

Lee, Wenlian William ^{[2
,3
]}

Chung, Wen-Hsin ^{[4
]}

Lin, Ho-Pan ^{[1
]}

Chen, Yen-Ju ^{[1
]}

Jiang, Yu-Rou ^{[1
]}

Lin, Wan-Yu ^{[4
]}

Chen, Chiing-Chang ^{[1
]}

机构：

[1] Natl Taichung Univ Educ, Dept Sci Applicat & Disseminat, Taichung 403, Taiwan

[2] Chung Shan Med Univ, Dept Occupat Safety & Hlth, Taichung 402, Taiwan

[3] Chung Shan Med Univ Hosp, Dept Occupat Med, Taichung 402, Taiwan

[4] Natl Chung Hsing Univ, Dept Plant Pathol, Taichung 402, Taiwan

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2014年 / 45卷 / 04期

关键词：

Bismuth oxybromide; Autoclave hydrothermal; Visible-light-responsive photocatalyst; SOLVOTHERMAL SYNTHESIS; ORGANIC-DYES; DEGRADATION; BIOBR; REMOVAL; WATER; MECHANISM; GREEN; PHOTODEGRADATION; TEMPERATURE;

D O I：

10.1016/j.jtice.2013.12.015

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Ternary bismuth oxybromides have been synthesized using autoclave hydrothermal methods. The products are characterized by XRD, SEM-EDS, XPS, FTIR, and DRS. We demonstrate that Bi12O17Br2, Bi5O7Br, Bi3O4Br, Bi24O31Br10, Bi4O5Br2, and BiOBr can be selectively prepared through a facile solution-based hydrothermal method. UV-vis spectra show bismuth oxybromide materials to be indirect semiconductors with an optical band gap of 2.22-2.76 eV. Photocatalytic efficiencies of powder suspensions were evaluated by measuring the Crystal Violet (CV) concentration. This is the first study to show the superior activities of Bi12O17Br2, Bi5O7Br, Bi3O4Br, and Bi4O5Br2 as a promising visible-light-responsive photocatalyst. (C) 2013 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：1892 / 1909

页数：18

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