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题名: Hexagonal Boron Nitride Cover on Pt(111): A New Route to Tune Molecule-Metal Interaction and Metal-Catalyzed Reactions
作者: Zhang, Yanhong1;  Weng, Xuefei2;  Li, Huan2;  Li, Haobo1;  Wei, Mingming1;  Xiao, Jianping1;  Liu, Zhi3;  Chen, Mingshu2;  Fu, Qiang1;  Bao, Xinhe1
关键词: hexagonal boron nitride (h-BN) ;  intercalation ;  Pt(111) ;  CO oxidation ;  confinement effect
刊名: NANO LETTERS
发表日期: 2015-05-01
DOI: 10.1021/acs.nanolett.5b01205
卷: 15, 期:5, 页:3616-3623
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Multidisciplinary ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Applied ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: In heterogeneous catalysis molecule-metal interaction is often modulated through structural modifications at the surface or under the surface of the metal catalyst. Here, we suggest an alternative way toward this modulation by placing a two-dimensional (2D) cover on the metal surface. As an illustration, CO adsorption on Pt(111) surface has been studied under 2D hexagonal boron nitride (h-BN) overlayer. Dynamic imaging data from surface electron microscopy and in situ surface spectroscopic results under near ambient pressure conditions confirm that CO molecules readily intercalate monolayer h-BN sheets on Pt(111) in CO atmosphere but desorb from the h-BN/Pt(111) interface even around room temperature in ultrahigh vacuum. The interaction of CO with Pt has been strongly weakened due to the confinement effect of the h-BN cover, and consequently, CO oxidation at the h-BN/Pt(111) interface was enhanced thanks to the alleviated CO poisoning effect.
关键词[WOS]: BIMETALLIC ALLOY SURFACES ;  EPITAXIAL GRAPHENE ;  PHOTOELECTRON-SPECTROSCOPY ;  CARBON-MONOXIDE ;  CO ;  OXIDATION ;  INTERCALATION ;  GROWTH ;  ADSORPTION ;  OXYGEN
语种: 英语
WOS记录号: WOS:000354906000126
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146288
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, iChEM, Dalian 116023, Peoples R China
2.Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
3.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

Recommended Citation:
Zhang, Yanhong,Weng, Xuefei,Li, Huan,et al. Hexagonal Boron Nitride Cover on Pt(111): A New Route to Tune Molecule-Metal Interaction and Metal-Catalyzed Reactions[J]. NANO LETTERS,2015,15(5):3616-3623.
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