Boosting photocatalytic water splitting by tuning built-in electric field at phase junction

doi:10.1039/c8ta08199a

	Boosting photocatalytic water splitting by tuning built-in electric field at phase junction
	Zhang, Jing 1; Chen, Xuebing 1; Bai, Yu 1; Li, Chun 1; Gao, Ying 1; Li, Rengui 2; Li, Can 2
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2019-05-07
卷号	7 期号:17 页码:10264-10272
ISSN号	2050-7488
DOI	10.1039/c8ta08199a
通讯作者	Zhang, Jing(zhangjing@lnpu.edu.cn) ; Li, Rengui(rgli@dicp.ac.cn)
英文摘要	Constructing a built-in electric field at the interface of semiconductors has been demonstrated to provide the driving force for spatial charge separation in photocatalysis. Although phase junctions (interfaces formed between two crystalline phases of the same semiconductor) have been demonstrated to be effective in spatial charge separation, regulation of the photocatalytic activity by precisely tuning the built-in electric fields is not yet well understood. In this work, taking anatase/rutile TiO2 phase junction as an example, the built-in electric field in the phase junction region was modulated via fabricating controllable anatase nanoparticles on rutile TiO2 surface to manipulate the interfacial contact area between anatase and rutile phases. We found that photocatalytic H-2 evolution depends strongly on the interfacial contact area between anatase and rutile TiO2. The relation between the anatase/rutile phase junction interfacial contact area and the specific photocatalytic activity shows a typical volcano curve, that is, increasing the interfacial contact area results in enhancement of the driving force for spatial charge separation, allowing more electrons and holes to migrate to the surface and participate in redox reactions, but further increasing the interfacial contact area leads to decline of photocatalytic activity. The optimized interfacial contact is the most favorable balance between the strength of built-in electric field and transfer distance for photogenerated charge carriers for separation and transfer of photogenerated electrons and holes at the phase junction region. Our work provides new insight into the construction of built-in electric fields on the surface of semiconductor-based photocatalysts to boost spatial charge separation for solar energy conversion systems.
资助项目	National Natural Science Foundation of China[21573101] ; Support Plan for Distinguished Professor of Liaoning Province[[2015]153] ; Liaoning BaiQianWan Talents Program[[2017]96] ; University Innovation Talent Support Plan of Liaoning Province[LR2017011] ; Natural Science Foundation of Liaoning Province[20170540583] ; Natural Science Foundation of Liaoning Province[20180510002] ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics[N-15-10] ; Talent Scienti. c Research Fund of LSHU[2016XJJ-012]
WOS关键词	CHARGE SEPARATION ; CATALYTIC PERFORMANCE ; HYDROGEN-PRODUCTION ; RATIONAL DESIGN ; SOLAR-CELLS ; TIO2 ; SURFACE ; EFFICIENT ; HETEROJUNCTION ; ANATASE
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000472183200074
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Support Plan for Distinguished Professor of Liaoning Province ; Support Plan for Distinguished Professor of Liaoning Province ; Liaoning BaiQianWan Talents Program ; Liaoning BaiQianWan Talents Program ; University Innovation Talent Support Plan of Liaoning Province ; University Innovation Talent Support Plan of Liaoning Province ; Natural Science Foundation of Liaoning Province ; Natural Science Foundation of Liaoning Province ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics ; Talent Scienti. c Research Fund of LSHU ; Talent Scienti. c Research Fund of LSHU ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Support Plan for Distinguished Professor of Liaoning Province ; Support Plan for Distinguished Professor of Liaoning Province ; Liaoning BaiQianWan Talents Program ; Liaoning BaiQianWan Talents Program ; University Innovation Talent Support Plan of Liaoning Province ; University Innovation Talent Support Plan of Liaoning Province ; Natural Science Foundation of Liaoning Province ; Natural Science Foundation of Liaoning Province ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics ; Talent Scienti. c Research Fund of LSHU ; Talent Scienti. c Research Fund of LSHU ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Support Plan for Distinguished Professor of Liaoning Province ; Support Plan for Distinguished Professor of Liaoning Province ; Liaoning BaiQianWan Talents Program ; Liaoning BaiQianWan Talents Program ; University Innovation Talent Support Plan of Liaoning Province ; University Innovation Talent Support Plan of Liaoning Province ; Natural Science Foundation of Liaoning Province ; Natural Science Foundation of Liaoning Province ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics ; Talent Scienti. c Research Fund of LSHU ; Talent Scienti. c Research Fund of LSHU ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Support Plan for Distinguished Professor of Liaoning Province ; Support Plan for Distinguished Professor of Liaoning Province ; Liaoning BaiQianWan Talents Program ; Liaoning BaiQianWan Talents Program ; University Innovation Talent Support Plan of Liaoning Province ; University Innovation Talent Support Plan of Liaoning Province ; Natural Science Foundation of Liaoning Province ; Natural Science Foundation of Liaoning Province ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics ; Fund of the State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics ; Talent Scienti. c Research Fund of LSHU ; Talent Scienti. c Research Fund of LSHU
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/175851]
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	Zhang, Jing; Li, Rengui
作者单位	1.Liaoning Shihua Univ, Sch Chem & Mat Sci, Fushun 113001, Liaoning, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy,Collaborat Innovat C, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jing,Chen, Xuebing,Bai, Yu,et al. Boosting photocatalytic water splitting by tuning built-in electric field at phase junction[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(17):10264-10272.
APA	Zhang, Jing.,Chen, Xuebing.,Bai, Yu.,Li, Chun.,Gao, Ying.,...&Li, Can.(2019).Boosting photocatalytic water splitting by tuning built-in electric field at phase junction.JOURNAL OF MATERIALS CHEMISTRY A,7(17),10264-10272.
MLA	Zhang, Jing,et al."Boosting photocatalytic water splitting by tuning built-in electric field at phase junction".JOURNAL OF MATERIALS CHEMISTRY A 7.17(2019):10264-10272.