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题名: Coadsorption of nitric oxide and oxygen on the Ag(110) surface
作者: Bao, X;  Wild, U;  Muhler, M;  Pettinger, B;  Schlogl, R;  Ertl, G
关键词: decomposition of NOx ;  photoemission spectroscopy ;  silver
刊名: SURFACE SCIENCE
发表日期: 1999-04-20
卷: 425, 期:2-3, 页:224-232
收录类别: SCI
文章类型: Article
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: The coadsorption of NO and O-2 on Ag(110) surface has been studied by X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS) and in situ Raman spectroscopy. The existence of oxygen enhances the adsorption of NO by forming the NOx species, that is, NO2 and NO3, and the NO in turn as a promotor facilitates the cleavage of the dioxygen bond, forming the surface atomic oxygen species having the same spectral characteristics as those produced using oxygen at high pressure. The oxygen species generated by the interaction is composed of two parts. One is produced directly by the decomposition of surface NO-O-2 complex at ca 625 K, which raised an O 1s feature at 530.5 eV and is absent at ca 800 K, while the another with an O 1s binding energy of 529.2 eV emerges at higher temperatures and shows similar properties as the reported gamma-state oxygen which bound tightly on restructured silver surface. The exposure to NO and O-2 causes noticeable changes in the morphology of the Ag(110) surface and the flat terraces superseded by small (ca 0.1 mu m) pits, and particles with typical diameters of a few micrometres were formed at elevated temperatures. (C) 1999 Elsevier Science B.V. All rights reserved.
关键词[WOS]: PHOTOELECTRON-SPECTROSCOPY ;  ELECTRONIC-STRUCTURE ;  SILVER ;  NO ;  OXIDATION ;  PLATINUM ;  CO
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000080080200010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/86385
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
2.MPG, Fritz Haber Inst, D-1419 Berlin, Germany

Recommended Citation:
Bao, X,Wild, U,Muhler, M,et al. Coadsorption of nitric oxide and oxygen on the Ag(110) surface[J]. SURFACE SCIENCE,1999,425(2-3):224-232.
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