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学科主题物理化学
Surface Chemistry of CO on Ru(0001) under the Confinement of Graphene Cover
Jin, Li1; Fu, Qiang1; Dong, Aiyi1; Ning, Yanxiao1; Wang, Zhoujun1; Bluhm, Hendrik2; Bao, Xinhe1; Fu Q(傅强)
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2014-06-12
DOI10.1021/jp5034855
118期:23页:12391-12398
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
关键词[WOS]EPITAXIAL GRAPHENE ; METAL-SURFACES ; OXIDATION ; OXYGEN ; INTERCALATION ; ADSORPTION ; CATALYST ; GROWTH ; DEACTIVATION ; MECHANISMS
英文摘要In heterogeneous catalysis, graphitic carbon formed on metal often poisons metal-catalyzed reactions through physical blockage of surface active sites. In materials science, recent works show that graphene overlayers can passivate metal surfaces acting as gas-impermeable protection coatings. However, here we show using in situ surface electron microscopy and photoemission spectroscopy that CO can be readily trapped inside the two-dimensional space between the graphene overlayer and Ru(0001) surface under near-ambient conditions. The intercalated CO molecules effectively decouple the graphene overlayer from the Ru substrate. Meanwhile, the graphene cover exerts a strong confinement effect on the surface chemistry of CO on Ru(0001), showing that a high-coverage CO adlayer can be kept at the graphene/Ru interface at room temperature which desorbs intensively and completely around 390 K. This finding challenges the traditional concept of graphene films as passivation layers, indicating that the surface graphitic carbon can be used to modify the surface chemistry of metals.
语种英语
WOS记录号WOS:000337497400033
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/144233
专题中国科学院大连化学物理研究所
通讯作者Fu Q(傅强)
作者单位1.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA
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GB/T 7714
Jin, Li,Fu, Qiang,Dong, Aiyi,et al. Surface Chemistry of CO on Ru(0001) under the Confinement of Graphene Cover[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(23):12391-12398.
APA Jin, Li.,Fu, Qiang.,Dong, Aiyi.,Ning, Yanxiao.,Wang, Zhoujun.,...&傅强.(2014).Surface Chemistry of CO on Ru(0001) under the Confinement of Graphene Cover.JOURNAL OF PHYSICAL CHEMISTRY C,118(23),12391-12398.
MLA Jin, Li,et al."Surface Chemistry of CO on Ru(0001) under the Confinement of Graphene Cover".JOURNAL OF PHYSICAL CHEMISTRY C 118.23(2014):12391-12398.
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