The photocatalytic performance of cesium tungsten oxide particles under visible-light irradiation and preparation using a glycothermal process

被引：8

作者：

Chiang, Tzu Hsuan ^{[1
]}

Zhou, Zheng-Xian ^{[1
]}

Hsu, Jia-Wei ^{[1
]}

机构：

[1] Natl United Univ, Dept Energy Engn, 2 Lienda, Miaoli 36063, Taiwan

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2019年 / 95卷

关键词：

Cesium tungsten oxide; Photocatalytic performance; Glycothermal; Caclining temperatures; Visible-light irradiation; ORGANIC POLLUTANTS; DEGRADATION; FABRICATION; FILMS; TIO2; WO3; ABSORPTION; DEPOSITION; GEL; MICROSTRUCTURE;

D O I：

10.1016/j.jtice.2018.08.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study investigated the role of cesium tungsten oxide particles in the photocatalytic degradation of dyes under visible-light irradiation. A cesium tungsten oxide compound with c-CsW1.6O6 particles was prepared by rapidly mixing ethylene glycol with ammonium tungstate parapentahydrate ((NH4)10W12O41 center dot 5H2O) and cesium nitrite (CsNO3) and heated at 120 degrees C for 1 h as part of the glycothermal process. Results indicated that the cesium tungsten oxide particles had a low band gap and generated holes (h(+)) and electrons (e(-)), which subsequently produced O-2(center dot-) and (HO)-H-center dot that degraded the methylene blue (MB) dye under visible-light irradiation. This study determined that the c-CsW1.6O6 structure of the 200 degrees C-calcined particles exhibited the best photocatalytic degradation of MB. The polymorphous structures of cesium tungsten oxide particles calcined at 400 degrees C or higher temperatures exhibited poor photocatalytic degradation of MB. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：393 / 404

页数：12

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