中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Dye-sensitized cobalt catalysts for high efficient visible light hydrogen evolution

文献类型:期刊论文

作者Kong C(孔超)1,2; Min SX(敏世雄)1,2; Lu GX(吕功煊)1
刊名International Journal of Hydrogen Energy
出版日期2014
卷号39期号:10页码:4836-4844
关键词Co CoSx Cocatalyst Sensitization Hydrogen evolution Visible light
ISSN号0360-3199
通讯作者吕功煊
英文摘要In this work, high efficient non-noble metal cobalt cocatalysts implanted on the surface of graphene (G) by one-step photoreduction and in-situ chemical deposition methods for hydrogen evolution were reported. XRD and TEM characterizations showed that the Co and CoSx nanoparticles were deposited on the graphene surface as Co/G and CoSx/G composites. CoSx/G and Co/G nanohybrids exhibited high photocatalytic activities for hydrogen evolution sensitized by Eosin Y (EY). The amounts of H2 evolution reached 708.5 and 675.5 μmol over the EY-sensitized CoSx/G and Co/G nanohybrids irradiated under visible light with wavelength longer than 420 nm in 3 h respectively. The apparent quantum efficiency (AQE) of 8.71% over EY-Co/G was accomplished under 520 nm illumination. The fluorescence results indicated that the lifetime of excited electron was remarkably increased. Graphene might promote the photogenerated electrons transfer from excited dye to the hydrogen evolution active sites such as Co or CoSx, and consequently enhance photocatalytic hydrogen evolution efficiency.
学科主题物理化学与绿色催化
收录类别SCI
资助信息the 973 and 863 Programs of Department of Sciences and Technology of China (2013CB632404;2012AA051501;2009CB220003);the NSF of China (grant no. 21173242)
语种英语
WOS记录号WOS:000334130800009
源URL[http://210.77.64.217/handle/362003/20451]  
专题兰州化学物理研究所_OSSO国家重点实验室
作者单位1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China
2.Univ Chinese Acad Sci, Beijing 10080, Peoples R China
推荐引用方式
GB/T 7714
Kong C,Min SX,Lu GX. Dye-sensitized cobalt catalysts for high efficient visible light hydrogen evolution[J]. International Journal of Hydrogen Energy,2014,39(10):4836-4844.
APA Kong C,Min SX,&Lu GX.(2014).Dye-sensitized cobalt catalysts for high efficient visible light hydrogen evolution.International Journal of Hydrogen Energy,39(10),4836-4844.
MLA Kong C,et al."Dye-sensitized cobalt catalysts for high efficient visible light hydrogen evolution".International Journal of Hydrogen Energy 39.10(2014):4836-4844.

入库方式: OAI收割

来源:兰州化学物理研究所

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