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题名: Direct observation of subsurface oxygen on the defects of Pd(100)
作者: Huang, WX;  Zhai, RS;  Bao, XH
关键词: electron emission measurements ;  oxygen ;  palladium ;  surface defects ;  work function measurements
刊名: SURFACE SCIENCE
发表日期: 1999-09-20
卷: 439, 期:1-3, 页:L803-L807
收录类别: SCI
文章类型: Letter
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Physics
英文摘要: Oxygen adsorption and desorption on a Pd(100) surface with a mesoscopic defect were studied by photoemission electron microscopy (PEEM). The defect surface, with an area of approximately 200 x 60 mu m(2), behaved differently from the perfect Pd(100) surface towards the adsorption of oxygen. When saturated, both surface oxygen and subsurface oxygen coexisted on the defect surface, whereas only surface oxygen was present on the Pd(100) surface. Upon heating, subsurface oxygen diffused back to the surface and desorbed with surface oxygen at the same time. The difference in oxygen adsorption ability between the defect surface and the perfect Pd(100) surface can be attributed to different structures of these two surfaces. (C) 1999 Elsevier Science B.V. All rights reserved.
关键词[WOS]: CATALYTIC CO OXIDATION ;  O-2 ;  SURFACE ;  RH(111) ;  PT(100)
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000082718400006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/86429
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, Dalian 116023, Peoples R China

Recommended Citation:
Huang, WX,Zhai, RS,Bao, XH. Direct observation of subsurface oxygen on the defects of Pd(100)[J]. SURFACE SCIENCE,1999,439(1-3):L803-L807.
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