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题名: Photoelectrochemical Properties of CuCrO2: Characterization of Light Absorption and Photocatalytic H-2 Production Performance
作者: Ma, Yi1, 2;  Zhou, Xin2;  Ma, Quanbao1;  Litke, Anton1;  Liu, Peng1;  Zhang, Yi1;  Li, Can2;  Hensen, Emiel J. M.1
关键词: Photocatalysis ;  Photoelectrochemistry ;  CuCrO2 ;  H-2 production ;  Co-catalysts
刊名: CATALYSIS LETTERS
发表日期: 2014-09-01
DOI: 10.1007/s10562-014-1318-1
卷: 144, 期:9, 页:1487-1493
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: CuCrO2 delafossite was prepared by the solid-state reaction between Cr2O3 and Cu2O at high temperature (900-1100 A degrees C). The materials were characterized by XRD, X-ray photoelectron, Raman and UV-Vis spectroscopy and transmission electron microscopy. The visible light absorption of the p-type semiconductor increased with increasing calcination temperature. First principles density functional theory calculations were used to compute the density of states and distinguish between Cr3+ d-d transitions and the charge separation electron transitions, which cannot be distinguished in CuCrO2 by UV-Vis spectroscopy. Photocathodes were prepared by depositing the as-prepared CuCrO2 on an FTO substrate by electrophoresis. The resulting cathodic photocurrents under visible light irradiation increased with increasing calcination temperature. CuCrO2 is a photostable semiconductor unlike Cu2O. Photocatalytic H-2 production in ethanol/water mixtures shows that the resulting materials are active in water splitting. Co-catalysts substantially increase the activity, the most preferred one is Pt with an order of magnitude increase in performance.
关键词[WOS]: TOTAL-ENERGY CALCULATIONS ;  AUGMENTED-WAVE METHOD ;  HYDROGEN EVOLUTION ;  SOLAR-CELLS ;  BASIS-SET ;  CATALYSTS ;  WATER ;  OXIDATION ;  EFFICIENT ;  CHROMITE
语种: 英语
WOS记录号: WOS:000340928800002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145707
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.Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

Recommended Citation:
Ma, Yi,Zhou, Xin,Ma, Quanbao,et al. Photoelectrochemical Properties of CuCrO2: Characterization of Light Absorption and Photocatalytic H-2 Production Performance[J]. CATALYSIS LETTERS,2014,144(9):1487-1493.
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