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学科主题物理化学
Synergetic Effect of Surface and Subsurface Ni Species at Pt-Ni Bimetallic Catalysts for CO Oxidation
Mu, Rentao1; Fu, Qiang1; Xu, Hong1; Zhang, Hui1; Huang, Yuying2; Jiang, Zheng2; Zhang, Shuo2; Tan, Dali1; Bao, Xinhe1; Fu Q(傅强); Bao XH(包信和)
刊名JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2011-02-16
ISSN待补充
DOI10.1021/ja109483a
133期:6页:1978-1986
收录类别SCI
文章类型Article
部门归属5
项目归属502
产权排名1,1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]OXYGEN REDUCTION REACTION ; FUEL-CELL ELECTROCATALYSTS ; TRANSITION-METAL SURFACES ; DENSITY-FUNCTIONAL THEORY ; ALPHA,BETA-UNSATURATED ALDEHYDES ; CHEMICAL-PROPERTIES ; PREFERENTIAL OXIDATION ; UNSATURATED ALDEHYDES ; SN-PT/SIO2 CATALYSTS ; ELECTRONIC-STRUCTURE
英文摘要Synergetic effect of surface and subsurface Ni species at Pt-Ni bimetallic catalysts for CO oxidation; Various well-defined Ni-Pt(111) model catalysts are constructed at atomic-level precision under ultra-high-vacuum conditions and characterized by X-ray photoelectron spectroscopy and scanning tunneling microscopy. Subsequent studies of CO oxidation over the surfaces show that a sandwich surface (NiO(1-x)/Pt/Ni/Pt(111)) consisting of both surface Ni oxide nanoislands and subsurface Ni atoms at a Pt(111) surface presents the highest reactivity. A similar sandwich structure has been obtained in supported Pt-Ni nanoparticles via activation in H(2) at an intermediate temperature and established by techniques including acid leaching, inductively coupled plasma, and X-ray adsorption near-edge structure. Among the supported Pt-Ni catalysts studied, the sandwich bimetallic catalysts demonstrate the highest activity to CO oxidation, where 100% CO conversion occurs near room temperature. Both surface science studies of model catalysts and catalytic reaction experiments on supported catalysts illustrate the synergetic effect of the surface and subsurface Ni species on the CO oxidation, in which the surface Ni oxide nanoislands activate O(2), producing atomic O species, while the subsurface Ni atoms further enhance the elementary reaction of CO oxidation with O.
语种英语
WOS记录号WOS:000287831800070
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/115482
专题中国科学院大连化学物理研究所
通讯作者Fu Q(傅强); Bao XH(包信和)
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
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GB/T 7714
Mu, Rentao,Fu, Qiang,Xu, Hong,et al. Synergetic Effect of Surface and Subsurface Ni Species at Pt-Ni Bimetallic Catalysts for CO Oxidation[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2011,133(6):1978-1986.
APA Mu, Rentao.,Fu, Qiang.,Xu, Hong.,Zhang, Hui.,Huang, Yuying.,...&包信和.(2011).Synergetic Effect of Surface and Subsurface Ni Species at Pt-Ni Bimetallic Catalysts for CO Oxidation.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,133(6),1978-1986.
MLA Mu, Rentao,et al."Synergetic Effect of Surface and Subsurface Ni Species at Pt-Ni Bimetallic Catalysts for CO Oxidation".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 133.6(2011):1978-1986.
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