Synthesis of hierarchical Bi2WO6 microspheres with high visible-light-driven photocatalytic activities by sol-gel-hydrothermal route

被引：23
|
作者：
Liu, Yumin [1 ]
Li, Zijing [1 ]
Lv, Hua [1 ]
Tang, Haibo [1 ]
Xing, Xinyan [1 ]
机构：
[1] Henan Normal Univ, Sch Chem & Chem Engn, Xinxiang 453007, Henan, Peoples R China
来源：
MATERIALS LETTERS | 2013年 / 108卷
基金：
中国国家自然科学基金;
关键词：
Bi2WO6; Semiconductors; Photocatalysis; Sol-gel-hydrothermal; Crystal growth; FABRICATION; TITANIA;
D O I：
10.1016/j.matlet.2013.06.064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Bi2WO6 samples with hierarchical microspheres structures built by higher order 2D nanoplate alignment were successfully synthesized by sol-gel-hydrothermal route. The structures and morphologies of the products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). UV-vis diffuse reflectance spectra indicated that as-prepared Bi2WO6 with hierarchical microspheres structures had enhanced absorption in both UV and visible light areas. Photocatalytic activities of the samples were evaluated by the degradation of methylene blue (MB) under visible light irradiation. Due to the unique morphology and porous structure, the hierarchical Bi2WO6 microspheres exhibited better photocatalytic activities than that of the Bi2WO6 prepared by hydrothermal routes. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：84 / 87
页数：4
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