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题名: Promoting Charge Separation and Injection by Optimizing the Interfaces of GaN:ZnO Photoanode for Efficient Solar Water Oxidation
作者: Wang, Zhiliang1, 2, 3;  Zong, Xu1, 2, 3;  Gao, Yuying1, 2, 3;  Han, Jingfeng1, 2;  Xu, Zhiqiang1, 2, 3;  Li, Zheng1, 2, 3;  Ding, Chunmei1, 2;  Wang, Shengyang1, 2, 3;  Li, Can1, 2
关键词: water oxidation ;  GaN:ZnO photoanode ;  charge separation ;  charge injection ;  interface ;  NiCoFeP cocatalyst
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2017-09-13
DOI: 10.1021/acsami.7b09021
卷: 9, 期:36, 页:30696-30702
收录类别: SCI
文章类型: Article
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
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.
关键词[WOS]: OXYGEN EVOLUTION CATALYSTS ;  ZNO SOLID-SOLUTION ;  PHOTOELECTROCHEMICAL CELLS ;  PHASE JUNCTION ;  PHOTOCATALYST ;  SEMICONDUCTOR ;  PERFORMANCE ;  ELECTRODE ;  NANOPARTICLES ;  NANORODS
语种: 英语
WOS记录号: WOS:000411043600050
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150155
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
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.
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