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题名: Dynamic Characterization of Graphene Growth and Etching by Oxygen on Ru(0001) by Photoemission Electron Microscopy
作者: Cui, Yi1;  Fu, Qiang1;  Zhang, Hui1;  Tan, Dali1;  Bao, Xinhe1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2009-11-26
DOI: 10.1021/jp907949a
卷: 113, 期:47, 页:20365-20370
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Epitaxial growth of graphene on Ru(0001) was investigated by photoemission electron microscopy (PEEM) and scanning tunneling microscopy (STM). By connecting the mesoscopic length scale of PEEM and the microscopic length scale of STM, we show that graphene overlayers with sizes ranging from nanometers to sub-millimeters have been prepared on Ru(0001) in a well-controllable fashion. From the systematic investigation of different methods to grow graphene on Ru(0001), the dominant factors in the graphene growth process have been revealed, which enables to grow graphene on transition metal surfaces in a controllable way. Additionally, the dynamic process of graphene etching by oxygen at temperatures between 600-1000 K Was Studied by in situ PEEM. The reaction kinetics results show that decrease in the graphene overlayers size is linearly dependent on the reaction time, indicating a reaction-controlled process. The catalytic effect of Ru substrate facilitates graphene oxidation, which shows relatively low activation energy of 27.2 kJ/mol.
关键词[WOS]: CHEMICAL-VAPOR-DEPOSITION ;  GRAPHITE MONOLAYER ;  CARBON-FILMS ;  PT(111) ;  INTERCALATION ;  NI(111) ;  OXIDATION ;  KINETICS ;  DISPERSIONS ;  CATALYSTS
语种: 英语
WOS记录号: WOS:000271826100035
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141622
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, State Key Laboratoty Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Cui, Yi,Fu, Qiang,Zhang, Hui,et al. Dynamic Characterization of Graphene Growth and Etching by Oxygen on Ru(0001) by Photoemission Electron Microscopy[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2009,113(47):20365-20370.
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