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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
KeywordGraphene Interface Catalysis Confinement Effect Co Oxidation Platinum
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
2014-12-02
DOI10.1073/pnas.1416368111
Volume111Issue:48Pages:17023-17028
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology
WOS SubjectMultidisciplinary Sciences
WOS Research AreaScience & Technology - Other Topics
WOS KeywordCHEMICAL-VAPOR-DEPOSITION ; DENSITY-FUNCTIONAL THEORY ; CO OXIDATION ; PHOTOELECTRON-SPECTROSCOPY ; EPITAXIAL GRAPHENE ; SURFACE SCIENCE ; PT(111) ; PLATINUM ; CARBON ; ADSORPTION
AbstractGraphitic 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.
Language英语
WOS IDWOS:000345920800024
Citation statistics
Cited Times:95[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145790
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
GB/T 7714
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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