Promoting Charge Separation and Injection by Optimizing the Interfaces of GaN:ZnO Photoanode for Efficient Solar Water Oxidation

	Promoting Charge Separation and Injection by Optimizing the Interfaces of GaN:ZnO Photoanode for Efficient Solar Water Oxidation
	Wang, Zhiliang 1,2,3; Zong, Xu 1,2,3; Gao, Yuying 1,2,3; Han, Jingfeng 1,2; Xu, Zhiqiang 1,2,3; Li, Zheng 1,2,3; Ding, Chunmei 1,2; Wang, Shengyang 1,2,3; Li, Can 1,2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2017-09-13
卷号	9 期号:36 页码:30696-30702
关键词	water oxidation GaN:ZnO photoanode charge separation charge injection interface NiCoFeP cocatalyst
英文摘要	Photoelectrochemical water splitting provides an attractive way to store solar energy in molecular hydrogen as a kind of sustainable fuel. To achieve high solar conversion efficiency, the most stringent criteria are effective charge separation and injection in electrodes. Herein, efficient photoelectrochemical water oxidation is realized by optimizing charge separation and surface charge transfer of GaN:ZnO photoanode. The charge separation can be greatly improved through modified moisture-assisted nitridation and HCl acid treatment, by which the interfaces in GaN:ZnO solid solution particles are optimized and recombination centers existing at the interfaces are depressed in GaN:ZnO photoanode. Moreover, a multimetal phosphide of NiCoFeP was employed as water oxidation cocatalyst to improve the charge injection at the photoanode/electrolyte interface. Consequently, it significantly decreases the overpotential and brings the photocurrent to a benchmark of 3.9 mA cm(-2) at 1.23 V vs RHE and a solar conversion efficiency over 1% was obtained.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]	Science & Technology - Other Topics ; Materials Science
关键词[WOS]	OXYGEN EVOLUTION CATALYSTS ; ZNO SOLID-SOLUTION ; PHOTOELECTROCHEMICAL CELLS ; PHASE JUNCTION ; PHOTOCATALYST ; SEMICONDUCTOR ; PERFORMANCE ; ELECTRODE ; NANOPARTICLES ; NANORODS
收录类别	SCI
语种	英语
WOS记录号	WOS:000411043600050
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150055]
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
作者单位	1.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhiliang,Zong, Xu,Gao, Yuying,et al. Promoting Charge Separation and Injection by Optimizing the Interfaces of GaN:ZnO Photoanode for Efficient Solar Water Oxidation[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(36):30696-30702.
APA	Wang, Zhiliang.,Zong, Xu.,Gao, Yuying.,Han, Jingfeng.,Xu, Zhiqiang.,...&Li, Can.(2017).Promoting Charge Separation and Injection by Optimizing the Interfaces of GaN:ZnO Photoanode for Efficient Solar Water Oxidation.ACS APPLIED MATERIALS & INTERFACES,9(36),30696-30702.
MLA	Wang, Zhiliang,et al."Promoting Charge Separation and Injection by Optimizing the Interfaces of GaN:ZnO Photoanode for Efficient Solar Water Oxidation".ACS APPLIED MATERIALS & INTERFACES 9.36(2017):30696-30702.