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题名: Structure control of Pt-Sn bimetallic catalysts supported on highly oriented pyrolytic graphite (HOPG)
作者: Yao, Yunxi1;  Fu, Qiang1;  Zhang, Zhen1;  Zhang, Hui1;  Ma, Teng1;  Tan, Dali1;  Bao, Xinhe1
关键词: bimetallic catalyst ;  electrocatalyst ;  HOPG ;  PtSn ;  CO adsorption ;  STM
刊名: APPLIED SURFACE SCIENCE
发表日期: 2008-04-30
DOI: 10.1016/j.apsusc.2007.12.007
卷: 254, 期:13, 页:3808-3812
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Coatings & Films ;  Physics, Applied ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Materials Science ;  Physics
英文摘要: PtSn bimetallic catalyst nanoparticles were grown on highly oriented pyrolytic graphite (HOPG) surfaces using the sequential deposition and co-deposition of Pt and Sn. The surface morphology and composition of the prepared PtSn catalysts were investigated by scanning tunneling microscopy and CO adsorption experiment. It is found that the structure of the PtSn catalysts can be controlled by the deposition process. The deposition sequence of 1st Pt and 2nd Sn and co-deposition of Pt and Sn produce Sn-shell and Pt-core structure, while the deposition sequence of 1st Sn and 2nd Pt leads to the growth of individual Pt and Sn particles. The formation of various PtSn bimetallic structures was attributed to the different surface energy of Pt and Sn, and the interaction of the metals with the HOPG surfaces. (C) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: ETHANOL FUEL-CELLS ;  ALLOY SURFACES ;  PD ;  ELECTROCATALYSTS ;  OVERLAYERS ;  CLUSTERS ;  GROWTH ;  CO ;  NANOPARTICLES ;  REACTIVITY
语种: 英语
WOS记录号: WOS:000255344500013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140793
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Yao, Yunxi,Fu, Qiang,Zhang, Zhen,et al. Structure control of Pt-Sn bimetallic catalysts supported on highly oriented pyrolytic graphite (HOPG)[J]. APPLIED SURFACE SCIENCE,2008,254(13):3808-3812.
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