文献类型：期刊文献

英文题名：Controlled fabrication of bismuth vanadium oxide hierarchical microtubes with enhanced visible light photocatalytic activity

作者：Ying, Yeqi[1];Tao, Feifei[1];Hong, Tianjie[1];Wang, Linxia[1]

机构：[1]Shaoxing Univ, Dept Chem & Chem Engn, Shaoxing 312000, Peoples R China

年份：2015

卷号：32

起止页码：82

外文期刊名：MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING

收录：SCI-EXPANDED(收录号：WOS:000350930300012)、、EI(收录号：20150500476662)、Scopus(收录号：2-s2.0-84921773323)、WOS

基金：The authors gratefully acknowledge the financial support by the National Natural Science Foundation of China (NSFC, Grant nos. 20901051 and 51372154), the Natural Science Foundation of Zhejiang Province (Grant no. LY12B01007) and the Zhejiang Provincial Science Technology Program of China (Grant no. 2013C33010).

语种：英文

外文关键词：Bismuth vanadium oxide; Microtubes; Photocatalytic degradation; Visible light; Hierarchical structures

外文摘要：Monoclinic bismuth vanadium oxide (BiVO4) hierarchical microtubes self-assembled by several nanowires have been successfully fabricated by a template-free approach. The morphology and structure of the as-prepared sample were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and UV-vis spectroscopy. BiVO4 microtubes have monoclinic structure with energy band gap of 236 eV. Based on the time-dependent experiments, the possible formation mechanism of BiVO4 microtubes was proposed. In addition, the photocatalytic activity of the as-prepared BiVO4 samples was evaluated by the degradation of methyl orange (MO) and various reactive dyes (RDs) under xenon lamp irradiation. In comparison with BiVO4 microrods, BiVO4 microtubes with hollow and porous structures showed higher photocatalytic activities and universality under visible-light irradiation. Due to the unique hierarchical hollow structures contributing to the increase of photocatalytic activities, BiVO4 microtubes exhibited the potential application as the promising visible-light photocatalyst. (C) 2015 Elsevier Ltd. All rights reserved.