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题名: Growth Mechanism of Graphene on Ru(0001) and O-2 Adsorption on the Graphene/Ru(0001) Surface
作者: Zhang, Hui1;  Fu, Qiang1;  Cui, Yi1;  Tan, Dali1;  Bao, Xinhe1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2009-05-14
DOI: 10.1021/jp810514u
卷: 113, 期:19, 页:8296-8301
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: The growth mechanism of monolayer (ML) graphene on Ru(0001) via pyrolysis of C2H4 was studied by scanning tunneling microscopy (STM), high-resolution electron energy loss spectroscopy (HREELS), and ultraviolet photoelectron spectroscopy (UPS). On the basis of the mechanistic understanding, graphene overlayers ranging from nanographene clusters to graphene film with 1 ML coverage were prepared in a well-controlled way. O-2 adsorption on the graphene/Ru(0001) surface was investigated by STM, UPS, and X-ray photoelectron spectroscopy (XPS). It is revealed that the Ru(0001) surface fully covered by graphene becomes passivated to O-2 adsorption at room temperature and only activated again at elevated temperatures (>500 K). The adsorbed oxygen intercalates between the topmost graphene overlayer and the Ru(0001) substrate surface. These intercalated oxygen atoms decouple the graphene layer from the Ru(0001) substrate, forming quasi-freestanding monolayer graphene atomic crystals floating on the O-Ru(0001) surface.
关键词[WOS]: ENERGY-LOSS SPECTROSCOPY ;  SCANNING-TUNNELING-MICROSCOPY ;  ANGLE-RESOLVED PHOTOEMISSION ;  CARBON NANOTUBES ;  OXIDATIVE DEHYDROGENATION ;  GRAPHITE MONOLAYER ;  OXYGEN-ADSORPTION ;  THERMAL EVOLUTION ;  SUPPORTED SILVER ;  PT(111) SURFACE
语种: 英语
WOS记录号: WOS:000265895500047
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141243
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:
Zhang, Hui,Fu, Qiang,Cui, Yi,et al. Growth Mechanism of Graphene on Ru(0001) and O-2 Adsorption on the Graphene/Ru(0001) Surface[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2009,113(19):8296-8301.
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