Unraveling the Interfacial Charge Migration Pathway at the Atomic Level in a Highly Efficient Z-Scheme Photocatalyst

doi:10.1002/anie.201904571

	Unraveling the Interfacial Charge Migration Pathway at the Atomic Level in a Highly Efficient Z-Scheme Photocatalyst
	Wang, Pengfei 1; Mao, Yueshuang 1; Li, Lina 2; Shen, Zhurui 3; Luo, Xiao 4; Wu, Kaifeng 4; An, Pengfei 5; Wang, Haitao 1; Su, Lina 1; Li, Yi 6
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2019-08-12
卷号	58 期号:33 页码:11329-11334
关键词	charge migration direct Z-scheme photocatalysts heterojunctions interfaces photocatalysis
ISSN号	1433-7851
DOI	10.1002/anie.201904571
通讯作者	Zhan, Sihui(sihuizhan@nankai.edu.cn)
英文摘要	A highly efficient Z-scheme photocatalytic system constructed with 1D CdS and 2D CoS2 exhibited high photocatalytic hydrogen-evolution activity of 5.54 mmol h(-1) g(-1) with an apparent quantum efficiency of 10.2 % at 420 nm. More importantly, its interfacial charge migration pathway was unraveled: The electrons are efficiently transferred from CdS to CoS2 through a transition atomic layer connected by Co-S-5.8 coordination, thus resulting in more photogenerated carriers participating in surface reactions. Furthermore, the charge-trapping and charge-transfer processes were investigated by transient absorption spectroscopy, which gave an estimated charge-separation yield of approximately 91.5 % and a charge-separated-state lifetime of approximately (5.2 +/- 0.5) ns in CdS/CoS2. This study elucidates the key role of interfacial atomic layers in heterojunctions and will facilitate the development of more efficient Z-scheme photocatalytic systems.
WOS关键词	CDS-PT ; EVOLUTION ; HETEROJUNCTION
WOS研究方向	Chemistry
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000478735900022
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/173171]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Zhan, Sihui
作者单位	1.Nankai Univ, MOE Key Lab Pollut Proc & Environm Criteria, Tianjin Key Lab Environm Remediat & Pollut Contro, Coll Environm Sci & Engn, Tianjin 300350, Peoples R China 2.Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201800, Peoples R China 3.Nankai Univ, Sch Mat Sci & Engn, Tianjin 300350, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 5.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China 6.Tianjin Univ, Dept Chem, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Wang, Pengfei,Mao, Yueshuang,Li, Lina,et al. Unraveling the Interfacial Charge Migration Pathway at the Atomic Level in a Highly Efficient Z-Scheme Photocatalyst[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2019,58(33):11329-11334.
APA	Wang, Pengfei.,Mao, Yueshuang.,Li, Lina.,Shen, Zhurui.,Luo, Xiao.,...&Zhan, Sihui.(2019).Unraveling the Interfacial Charge Migration Pathway at the Atomic Level in a Highly Efficient Z-Scheme Photocatalyst.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,58(33),11329-11334.
MLA	Wang, Pengfei,et al."Unraveling the Interfacial Charge Migration Pathway at the Atomic Level in a Highly Efficient Z-Scheme Photocatalyst".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 58.33(2019):11329-11334.