Highly efficient photocatalytic activities, band alignment of BiVO4/BiOCl {001} prepared by in situ chemical transformation

IMR OpenIR

	Highly efficient photocatalytic activities, band alignment of BiVO4/BiOCl {001} prepared by in situ chemical transformation
	Shan, Lianwei; Liu, Yuteng; Suriyaprakash, Jagadeesh; Ma, Chengguo; Wu, Ze; Dong, Limin; Liu, Lizhu; Shlw0531@163.com
	2016
发表期刊	JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
ISSN	1381-1169
卷号	411 页码:179-187
摘要	The proper band alignment of coupled semiconductor plays a key role on enhancing photocatalytic activity due to the valence and conduction difference in the interface to drive the photogenerated charge carrier separation. However, little is known about the exact band alignment of coupled semiconductors due to that most band alignments were schematic by valence of monocomponent, but not consider the interface effect of coupled semiconductors. Herein the novel synthesis strategy via in situ chemical transformation was successfully utilized to prepare BiVO4/BiOCl {001} heterojunctions. The results of transmission electron microscopy (TEM) show that BiVO4/BiOCl photocatalyst was made of BiOCl sheets and BiVO4 nanoparticles. The exact band alignment was experimentally demonstrated in BiVO4/BiOCl through X-ray photoelectron spectroscopy (XPS). The results show that the valence band difference is 0.58 eV which is a driving force valence of band holes from BiVO4 to BiOCl by the valence band offset. While the reductive electrons were driven by conduction band difference (1.27 eV) along the opposite direction compared to the oxidative holes. The large driving force for the charge transport across the interface explains the high photocatalytic activity achieved by the BiVO4/BiOCl. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[shan, lianwei ; liu, yuteng ; ma, chengguo ; wu, ze ; dong, limin ; liu, lizhu] harbin univ sci & technol, coll mat sci & engn, harbin 150040, peoples r china ; [suriyaprakash, jagadeesh] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
关键词	Band Alignment Bivo4 Biocl In Situ Chemical Transformation
资助者	Education Department Program of Heilongjiang Province [12541111]
收录类别	sci
语种	英语
WOS记录号	WOS:000367420400021
引用统计	被引频次：45[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74890
专题	中国科学院金属研究所
通讯作者	Shlw0531@163.com
推荐引用方式 GB/T 7714	Shan, Lianwei,Liu, Yuteng,Suriyaprakash, Jagadeesh,et al. Highly efficient photocatalytic activities, band alignment of BiVO4/BiOCl {001} prepared by in situ chemical transformation[J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,2016,411:179-187.
APA	Shan, Lianwei.,Liu, Yuteng.,Suriyaprakash, Jagadeesh.,Ma, Chengguo.,Wu, Ze.,...&Shlw0531@163.com.(2016).Highly efficient photocatalytic activities, band alignment of BiVO4/BiOCl {001} prepared by in situ chemical transformation.JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL,411,179-187.
MLA	Shan, Lianwei,et al."Highly efficient photocatalytic activities, band alignment of BiVO4/BiOCl {001} prepared by in situ chemical transformation".JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL 411(2016):179-187.