Self-assembled three-dimensional hierarchical Bi2WO6 microspheres by sol-gel-hydrothermal route

被引：34

作者：

Liu, Yumin ^{[1
]}

Tang, Haibo ^{[1
]}

Lv, Hua ^{[1
]}

Li, Zijin ^{[1
]}

Ding, Zhiwei ^{[1
]}

Li, Shuang ^{[1
]}

机构：

[1] Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Henan, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Porosity; Bi2WO6; Photocatalytic; Sol-gel hydrothennal; PHOTOCATALYTIC DECOMPOSITION; ORGANIC CONTAMINANTS; FABRICATION; TIO2; NANOCRYSTALS; PERFORMANCE;

D O I：

10.1016/j.ceramint.2013.11.075

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Self-assembled three-dimensional (3D) hierarchical Bi2WO6 microspheres built from 2D nanoplates alignment were successfully prepared by the sol gel hydrothermal route. Based on X-ray diffraction and scanning electron microscopy observation of the products at different reaction time periods, the formation mechanism of 3D hierarchical Bi2WO6 microspheres was proposed. UV vis diffuse reflectance spectra indicated that the obtained 3D hierarchical Bi2WO6 microspheres had enhanced absorption in both UV and visible light regions. The photocatalytic activities of the as-prepared products were evaluated by monitoring the degradation of methylene blue solution under visible light irradiation. Due to the structural feature and good optical quality, Bi2WO6 prepared by the sol gel hydrothermal route possessed the highest photocatalytic activity than those of Bi2WO6 samples prepared by hydrothermal and sol gel routes. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：6203 / 6209

页数：7

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