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题名: Visible light driven overall water splitting using cocatalyst/BiVO4 photoanode with minimized bias
作者: Ding, Chunmei1;  Shi, Jingying1;  Wang, Donge1;  Wang, Zhijun1;  Wang, Nan1;  Liu, Guiji1;  Xiong, Fengqiang1;  Li, Can1
刊名: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
发表日期: 2013
DOI: 10.1039/c3cp50295c
卷: 15, 期:13, 页:4589-4595
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Chemistry ;  Physics
英文摘要: BiVO4 and many other semiconductor materials are ideal visible light responsive semiconductors, but are insufficient for overall water splitting. Upon loading water oxidation cocatalyst, for example Co-borate (denoted as CoBi) used here, onto BiVO4 photoanode, it is found that not only the onset potential is negatively shifted but also the photocurrent and the stability are significantly improved. And more importantly, PEC overall water splitting to H-2 and O-2 is realized using CoBi/BiVO4 as photoanode with a rather low applied bias (less than 0.3 V vs. counter electrode) in a two-electrode scheme, while at least 0.6 V is needed for bare BiVO4. This work demonstrates the practical possibility of achieving overall water splitting using the PEC strategy under a bias as low as the theoretical minimum, which is the difference between the flat band and proton reduction potential for a photoanode thermodynamically insufficient for water reduction. As long as the water oxidation overpotential is overcome with an efficient cocatalyst, the applied bias of the whole system is only used for that thermodynamically required for the proton reduction.
关键词[WOS]: OXYNITRIDE TAON PHOTOANODE ;  OXIDATION CATALYSTS ;  FACILE FABRICATION ;  BIVO4 ;  EFFICIENT ;  COBALT ;  ELECTROLYTE ;  IRRADIATION ;  SEMICONDUCTOR ;  FILMS
语种: 英语
WOS记录号: WOS:000315649500016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137628
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, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Ding, Chunmei,Shi, Jingying,Wang, Donge,et al. Visible light driven overall water splitting using cocatalyst/BiVO4 photoanode with minimized bias[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2013,15(13):4589-4595.
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