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Graphene cover-promoted metal-catalyzed reactions
Yao, Yunxi1,2; Fu, Qiang1; Zhang, Y. Y.3; Weng, Xuefei4; Li, Huan4; Chen, Mingshu4; Jin, Li1; Dong, Aiyi1; Mu, Rentao1; Jiang, Peng1; Liu, Li2,5; Bluhm, Hendrik6; Liu, Zhi7; Zhang, S. B.3; Bao, Xinhe1
关键词Graphene Interface Catalysis Confinement Effect Co Oxidation Platinum
刊名PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
2014-12-02
DOI10.1073/pnas.1416368111
111期:48页:17023-17028
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Multidisciplinary Sciences
研究领域[WOS]Science & Technology - Other Topics
关键词[WOS]CHEMICAL-VAPOR-DEPOSITION ; DENSITY-FUNCTIONAL THEORY ; CO OXIDATION ; PHOTOELECTRON-SPECTROSCOPY ; EPITAXIAL GRAPHENE ; SURFACE SCIENCE ; PT(111) ; PLATINUM ; CARBON ; ADSORPTION
英文摘要Graphitic overlayers on metals have commonly been considered as inhibitors for surface reactions due to their chemical inertness and physical blockage of surface active sites. In this work, however, we find that surface reactions, for instance, CO adsorption/desorption and CO oxidation, can take place on Pt(111) surface covered by monolayer graphene sheets. Surface science measurements combined with density functional calculations show that the graphene overlayer weakens the strong interaction between CO and Pt and, consequently, facilitates the CO oxidation with lower apparent activation energy. These results suggest that interfaces between graphitic overlayers and metal surfaces act as 2D confined nano-reactors, in which catalytic reactions are promoted. The finding contrasts with the conventional knowledge that graphitic carbon poisons a catalyst surface but opens up an avenue to enhance catalytic performance through coating of metal catalysts with controlled graphitic covers.
语种英语
WOS记录号WOS:000345920800024
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145790
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA
3.Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA
4.Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China
5.Texas A&M Univ, Dept Mat Sci & Engn, College Stn, TX 77843 USA
6.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA
7.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA
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Yao, Yunxi,Fu, Qiang,Zhang, Y. Y.,et al. Graphene cover-promoted metal-catalyzed reactions[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2014,111(48):17023-17028.
APA Yao, Yunxi.,Fu, Qiang.,Zhang, Y. Y..,Weng, Xuefei.,Li, Huan.,...&Bao, Xinhe.(2014).Graphene cover-promoted metal-catalyzed reactions.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,111(48),17023-17028.
MLA Yao, Yunxi,et al."Graphene cover-promoted metal-catalyzed reactions".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 111.48(2014):17023-17028.
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