Graphene cover-promoted metal-catalyzed reactions
文献类型：期刊论文
| 作者 | Yao, Yunxi1,2; Fu, Qiang1; Zhang, Y. Y.3; Weng, Xuefei4; Li, Huan4; Chen, Mingshu4; Jin, Li1; Dong, Aiyi1; Mu, Rentao1; Jiang, Peng1 |
| 刊名 | proceedings of the national academy of sciences of the united states of america
 |
| 出版日期 | 2014-12-02 |
| 卷号 | 111期号:48页码:17023-17028 |
| 关键词 | graphene interface catalysis confinement effect CO oxidation platinum |
| 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. |
| 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000345920800024 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145790]  |
| 专题 | 大连化学物理研究所_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 |
| 推荐引用方式 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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来源：大连化学物理研究所
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