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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
Source PublicationJOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
ISSN1381-1169
Volume411Pages:179-187
AbstractThe 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.
description.department[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
KeywordBand Alignment Bivo4 Biocl In Situ Chemical Transformation
Funding OrganizationEducation Department Program of Heilongjiang Province [12541111]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74890
Collection中国科学院金属研究所
Corresponding AuthorShlw0531@163.com
Recommended Citation
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.
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