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题名: Photocatalytic Water Oxidation on BiVO4 with the Electrocatalyst as an Oxidation Cocatalyst: Essential Relations between Electrocatalyst and Photocatalyst
作者: Wang, Donge1, 2;  Li, Rengui1, 2;  Zhu, Jian1, 2;  Shi, Jingying1;  Han, Jingfeng1, 2;  Zong, Xu1;  Li, Can1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2012-03-01
DOI: 10.1021/jp210584b
卷: 116, 期:8, 页:5082-5089
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: The oxygen evolution is kinetically the key step in the photocatalytic water splitting. Cocatalysts could lower the activation potential for O-2 evolution. However, the cocatalyst for O-2 evolution has been less investigated, and few effective cocatalysts were reported. This paper reports that the O-2 evolution rate of photocatalytic water splitting under visible light irradiation can be significantly enhanced when the electrocatalyst cobalt phosphate (denoted as CoPi) was deposited on BiVO4. The photocurrent density is also greatly enhanced by loading CoPi on BiVO4 electrode, and this enhancement in performance shows the similar trend between the photocatalytic activity and photocurrent density. We also found that this tendency is true for BiVO4 loaded with a series of different electrocatalysts as the cocatalysts. These results demonstrate that an effective electrocatalyst of water oxidation can be also an effective cocatalyst for O-2 evolution from photocatalytic water oxidation. By depositing the CoPi as the oxidation cocatalyst and Pt as the reduction cocatalyst on an yttrium-doped BiVO4 (Bi0.5Y0.5VO4), overall water splitting reaction to H-2 and O-2 was realized. Our work also reveals the essential relations between photocatalysis and electrocatalysis in water splitting reaction.
关键词[WOS]: OXYGEN-EVOLVING CATALYST ;  (GA1-XZNX)(N1-XOX) SOLID-SOLUTION ;  VISIBLE-LIGHT IRRADIATION ;  HYDROGEN-PRODUCTION ;  OXIDE ELECTRODE ;  SOLAR-ENERGY ;  EVOLUTION ;  H-2 ;  DECOMPOSITION ;  O-2
语种: 英语
WOS记录号: WOS:000300911600021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138015
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
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Wang, Donge,Li, Rengui,Zhu, Jian,et al. Photocatalytic Water Oxidation on BiVO4 with the Electrocatalyst as an Oxidation Cocatalyst: Essential Relations between Electrocatalyst and Photocatalyst[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2012,116(8):5082-5089.
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