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学科主题: 物理化学
题名: Oscillation of Surface Structure and Reactivity of PtNi Bimetallic Catalysts with Redox Treatments at Variable Temperatures
作者: Mu, Rentao1;  Guo, Xiaoguang1;  Fu, Qiang1;  Bao, Xinhe1
通讯作者: 傅强 ;  包信和
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2011-10-27
DOI: 10.1021/jp206517r
卷: 115, 期:42, 页:20590-20595
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 ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
摘要: Oscillation of Surface Structure and Reactivity of PtNi Bimetallic Catalysts with Redox Treatments at Variable Temperatures
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Over Ni-Pt(111) model catalysts, changes in the surface structure were observed during alternating reduction and oxidation (redox) treatments at variable temperatures (VTs). Pt skin with subsurface Ni and NiO on Pt(111) form upon high-temperature reduction and high-temperature oxidation, respectively. Both Ni and Pt atoms are present on the surface with the low-temperature redox treatments. The similar surface structures can be constructed at supported Pt-Ni nanoparticles through the VT redox treatments. Both the surface structure and the CO oxidation performance of the supported Pt-Ni catalysts showed well-defined oscillations with the treatment temperature and the redox potential. The demonstrated treatment-structure-reactivity relationship at the PtNi catalysts aids in the design of advanced bimetallic catalysts.
关键词[WOS]: OXYGEN REDUCTION REACTION ;  DENSITY-FUNCTIONAL THEORY ;  CORE-SHELL NANOPARTICLES ;  PT3CO NANOPARTICLES ;  CHEMICAL-PROPERTIES ;  OXIDATION ;  ALLOY ;  SEGREGATION ;  HYDROGEN ;  PT(111)
语种: 英语
WOS记录号: WOS:000296205600033
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115505
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:
Mu, Rentao,Guo, Xiaoguang,Fu, Qiang,et al. Oscillation of Surface Structure and Reactivity of PtNi Bimetallic Catalysts with Redox Treatments at Variable Temperatures[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2011,115(42):20590-20595.
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