中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 大连化学物理研究所
  3. 中国科学院大连化学物理研究所
Stabilization of GaAs photoanodes by in situ deposition of nickel-borate surface catalysts as hole trapping sites

文献类型：期刊论文

作者Jiang, Chaoran1,3; Wu, Jiang2,4; Moniz, Savio J. A.1; Guo, Daqian2; Tang, Mingchu2; Jiang, Qi2; Chen, Siming2; Liu, Huiyun2; Wang, Aiqin3; Zhang, Tao3
刊名SUSTAINABLE ENERGY & FUELS
出版日期2019-03-01
卷号3期号:3页码:814-822
ISSN号2398-4902
DOI10.1039/c8se00265g
通讯作者Wang, Aiqin(aqwang@dicp.ac.cn) ; Tang, Junwang(junwang.tang@ucl.ac.uk)
英文摘要Although semiconducting gallium arsenide (GaAs) possesses an ideal band gap for efficient solar-driven fuel synthesis, it is extremely unstable in aqueous media, undergoing facile photocorrosion and therefore is seldom used. We have addressed this stability problem to some extent using a strategy of introducing a Ni-B surface catalyst onto p/n junction GaAs by in situ photoassisted electrodeposition. A monolithic layer of Ni-B/Ga(As)O-x was generated during the Ni-B deposition process, resulting in a Ni-B/Ga(As)O-x/GaAs photoanode structure. Such a structure was optimized by varying the GaAs surface architecture, electrolyte pH value and Ni-B deposition time to achieve optimal photoelectrochemical performance, together with improved stability. The optimized photoanode Ni-B/Ga(As)O-x/shallow GaAs with 0.5 h Ni-B deposition time (approximate to 900 nm thickness of the Ni-B/Ga(As)O-x layer) exhibited a very high photocurrent, leading to a nearly 22 hour stable photocurrent density of 20 mA cm(-2), while bare GaAs exhibits 60% photocurrent loss after three hours under continuous one sun illumination (100 mW cm(-2)) in alkaline media (pH = 14). This remarkable performance in both photocurrent and stability directly addresses the current severe limitations in the application of GaAs photoanodes for solar fuel synthesis, and they may be applicable to other unstable photoelectrodes.
WOS关键词OXYGEN-EVOLVING CATALYST ; HYDROGEN-PRODUCTION ; WATER ; PHOTOLYSIS ; FILMS
资助项目China Scholarship Council (CSC)[201308060090] ; EPSRC[EP/N009533/1] ; Leverhulme Trust[RPG-2017-122] ; Newton Advanced Fellowship grant[NA150418]
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
语种英语
WOS记录号WOS:000467218700015
出版者ROYAL SOC CHEMISTRY
资助机构China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; EPSRC ; EPSRC ; Leverhulme Trust ; Leverhulme Trust ; Newton Advanced Fellowship grant ; Newton Advanced Fellowship grant ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; EPSRC ; EPSRC ; Leverhulme Trust ; Leverhulme Trust ; Newton Advanced Fellowship grant ; Newton Advanced Fellowship grant ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; EPSRC ; EPSRC ; Leverhulme Trust ; Leverhulme Trust ; Newton Advanced Fellowship grant ; Newton Advanced Fellowship grant ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; EPSRC ; EPSRC ; Leverhulme Trust ; Leverhulme Trust ; Newton Advanced Fellowship grant ; Newton Advanced Fellowship grant
源URL[http://cas-ir.dicp.ac.cn/handle/321008/165480]  
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Wang, Aiqin; Tang, Junwang
作者单位1.UCL, Dept Chem Engn, Torrington Pl, London WC1E 7JE, England
2.Dept Elect & Elect Engn, Torrington Pl, London WC1E 7JE, England
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
4.Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China
推荐引用方式
GB/T 7714		 Jiang, Chaoran,Wu, Jiang,Moniz, Savio J. A.,et al. Stabilization of GaAs photoanodes by in situ deposition of nickel-borate surface catalysts as hole trapping sites[J]. SUSTAINABLE ENERGY & FUELS,2019,3(3):814-822.
APA Jiang, Chaoran.,Wu, Jiang.,Moniz, Savio J. A..,Guo, Daqian.,Tang, Mingchu.,...&Tang, Junwang.(2019).Stabilization of GaAs photoanodes by in situ deposition of nickel-borate surface catalysts as hole trapping sites.SUSTAINABLE ENERGY & FUELS,3(3),814-822.
MLA Jiang, Chaoran,et al."Stabilization of GaAs photoanodes by in situ deposition of nickel-borate surface catalysts as hole trapping sites".SUSTAINABLE ENERGY & FUELS 3.3(2019):814-822.

入库方式： OAI收割

来源：大连化学物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。