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题名: Controlled Transformation of the Structures of Surface Fe (FeO) and Subsurface Fe on Pt(111)
作者: Ma Teng1;  Fu Qiang1;  Cui Yi1;  Zhang Zhen1;  Wang Zhen1;  Tan Dali1;  Bao Xinhe1
关键词: bimetallic catalyst ;  oxide ;  platinum-skin ;  inverse model system
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2010
DOI: 10.1016/S1872-2067(09)60037-1
卷: 31, 期:1, 页:24-32
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: Monolayer Fe films on Pt(111) and their derived structures under different environments were investigated by scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). The growth of monolayer Fe films was seen at 487 K. The surface composition and structure of the Fe/Pt(111) surface were monitored by XPS and STM during stepwise annealing under vacuum. Surface Fe was driven into the subsurface region during annealing above 800 K. This resulted in a Pt-skin surface of Pt/Fe/Pt(111). Oxidation of the Pt-skin structure in O(2) produced a FeO surface structure, FeO/Pt(111). This was transformed into a Surface Fe structure by mild reduction in H(2) (600 K) and into subsurface Fe by further severe reduction (800 K). The transformation of surface Fe (FeO) and subsurface Fe in Pt(111) was reversible in cycled oxidation and reduction treatments. The results demonstrated the controlled preparation of various Fe-Pt surfaces. This can be important for the design of high-performance and low-cost catalysts.
关键词[WOS]: BIMETALLIC SURFACES ;  ELECTRONIC-STRUCTURE ;  SELECTIVE OXIDATION ;  ALLOY SURFACES ;  GROWTH ;  CO ;  FILMS ;  IRON ;  CATALYSTS ;  STM
语种: 英语
WOS记录号: WOS:000274753100005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142232
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:
Ma Teng,Fu Qiang,Cui Yi,et al. Controlled Transformation of the Structures of Surface Fe (FeO) and Subsurface Fe on Pt(111)[J]. CHINESE JOURNAL OF CATALYSIS,2010,31(1):24-32.
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