Visible light driven overall water splitting using cocatalyst/BiVO4 photoanode with minimized bias

	Visible light driven overall water splitting using cocatalyst/BiVO4 photoanode with minimized bias
	Ding, Chunmei; Shi, Jingying; Wang, Donge; Wang, Zhijun; Wang, Nan; Liu, Guiji; Xiong, Fengqiang; Li, Can
刊名	physical chemistry chemical physics
	2013
卷号	15 期号:13 页码:4589-4595
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.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical ; physics, atomic, molecular & chemical
研究领域[WOS]	chemistry ; physics
关键词[WOS]	oxynitride taon photoanode ; oxidation catalysts ; facile fabrication ; bivo4 ; efficient ; cobalt ; electrolyte ; irradiation ; semiconductor ; films
收录类别	SCI
语种	英语
WOS记录号	WOS:000315649500016
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/137628]
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	Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	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.
APA	Ding, Chunmei.,Shi, Jingying.,Wang, Donge.,Wang, Zhijun.,Wang, Nan.,...&Li, Can.(2013).Visible light driven overall water splitting using cocatalyst/BiVO4 photoanode with minimized bias.physical chemistry chemical physics,15(13),4589-4595.
MLA	Ding, Chunmei,et al."Visible light driven overall water splitting using cocatalyst/BiVO4 photoanode with minimized bias".physical chemistry chemical physics 15.13(2013):4589-4595.