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题名: Nanosized FeOx overlayers on Pt-skin surfaces for low temperature CO oxidation
作者: Xu, Hong1;  Fu, Qiang1;  Bao, Xinhe1
关键词: CO oxidation ;  Pt-skin ;  Fe oxide ;  Interface catalysis
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2013-11-01
DOI: 10.1016/S1872-2067(12)60673-1
卷: 34, 期:11, 页:2029-2035
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Pt-Cu/carbon black catalysts were prepared by an impregnation-reduction method followed by acid leaching. The structure and composition of Pt-Cu nanoparticles treated under different conditions were investigated by inductively coupled plasma atomic emission spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy. PtCu3 alloy formed upon annealing Pt-Cu/carbon black catalysts in H-2. Acid leaching produced Pt-Cu nanoparticles consisting of Pt-skeleton surface structure and PtCu3 alloy core. The Pt-skeleton could be transformed to well-defined Pt-skin structure through further annealing the leached Pt-Cu nanoparticles in H-2. Decorating the Pt-skin surfaces with Fe oxide nanopatches resulted in enhanced reactivity in the preferential oxidation of CO in excess H-2. The tri-component Pt-Cu-Fe catalysts exhibited comparable activity to the bi-component Pt-Fe catalysts but used much less Pt. (C) 2013, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
关键词[WOS]: OXYGEN REDUCTION REACTION ;  SHELL NANOPARTICLES ;  BIMETALLIC CATALYSTS ;  TOLERANT ELECTROCATALYSTS ;  PREFERENTIAL OXIDATION ;  FEPT NANOPARTICLES ;  FERROUS CENTERS ;  ALLOY ;  PLATINUM ;  HYDROGEN
语种: 英语
WOS记录号: WOS:000326769800010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137637
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, Liaoning, Peoples R China

Recommended Citation:
Xu, Hong,Fu, Qiang,Bao, Xinhe. Nanosized FeOx overlayers on Pt-skin surfaces for low temperature CO oxidation[J]. CHINESE JOURNAL OF CATALYSIS,2013,34(11):2029-2035.
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