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学科主题: 物理化学
题名: In Situ Oxidation Study of Pt(110) and Its Interaction with CO
作者: Butcher, Derek R.2, 5;  Grass, Michael E.1, 5;  Zeng, Zhenhua2;  Aksoy, Funda3, 5;  Bluhm, Hendrik5;  Li, Wei-Xue2;  Mun, Bongjin S.1;  Somorjai, Gabor A.4, 5;  Liu, Zhi5
通讯作者: BongjinS.Mun ;  李微雪 ;  ZhiLiu
刊名: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
发表日期: 2011-12-21
DOI: 10.1021/ja207261s
卷: 133, 期:50, 页:20319-20325
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 507
产权排名: 3,1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
摘要: In Situ Oxidation Study of Pt(110) and Its Interaction with CO
研究领域[WOS]: Chemistry
英文摘要: Many interesting structures have been observed for O(2)-exposed Pt(110). These structures, along with their stability and reactivity toward CO, provide insights into catalytic processes on open Pt surfaces, which have similarities to Pt nanoparticle catalysts. In this study, we present results from ambient-pressure X-ray photoelectron spectroscopy, high-pressure scanning tunneling microscopy, and density functional theory calculations. At low oxygen pressure, only chemisorbed oxygen is observed on the Pt(110) surface. At higher pressure (0.5 Torr of O(2)), nanometer-sized islands of multilayered alpha-PtO(2)-like surface oxide form along with chemisorbed oxygen. Both chemisorbed oxygen and the surface oxide are removed in the presence of CO, and the rate of disappearance of the surface oxide is dose to that of the chemisorbed oxygen at 270 K. The spectroscopic features of the surface oxide are similar to the oxide observed on Pt nanoparticles of a similar size, which provides us an extra incentive to revisit some single-crystal model catalyst surfaces under elevated pressure using in situ tools.
关键词[WOS]: RAY PHOTOELECTRON-SPECTROSCOPY ;  PT-GROUP METALS ;  AMBIENT-PRESSURE ;  PYRROLE HYDROGENATION ;  LEVEL SHIFTS ;  SURFACE ;  PLATINUM ;  OXIDE ;  NANOPARTICLES ;  PHOTOEMISSION
语种: 英语
WOS记录号: WOS:000298713600054
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115720
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.Hanyang Univ, Dept Appl Phys, ERICA, Seoul 426791, South Korea
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Nigde Univ, Dept Phys, Fac Arts & Sci, Nigde, Turkey
4.Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
5.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

Recommended Citation:
Butcher, Derek R.,Grass, Michael E.,Zeng, Zhenhua,et al. In Situ Oxidation Study of Pt(110) and Its Interaction with CO[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2011,133(50):20319-20325.
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