DICP OpenIR
Surface-embedded oxygen: Electronic structure of Ag(111) and Cu(poly) oxidized at atmospheric pressure
SchedelNiedrig, T; Bao, X; Muhler, M; Schlogl, R
关键词Adsorption Catalysis Spectroscopy Photoelectron Spectroscopy X-ray
刊名BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS
1997-07-01
101期:7页:994-1006
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]RAY-ABSORPTION SPECTROSCOPY ; TRANSITION-METAL OXIDES ; PHOTOELECTRON-SPECTROSCOPY ; FINE-STRUCTURE ; ENERGY-LOSS ; SILVER ; ADSORPTION ; OXIDATION ; CU2O ; DIFFRACTION
英文摘要We investigated the surface electronic structure of an oxidized Ag(111) single crystal and a polycrystalline Cu foil prepared under conditions of pressure and temperature (1000 mbar and 900 K) far beyond those used in usual UHV studies. It has recently been shown that a strongly bound oxygen species (O-gamma) apart from oxygen atoms chemisorbed on the surface (O-alpha) or oxygen atoms dissolved in the bulk (O-beta) can be prepared on on silver surfaces. Using core-level photoemission we show these three atomic oxygen species, O-alpha, O-beta and O-gamma, exhibit characteristic spectral properties. X-ray absorption spectroscopy at the O K-edge indicates that the formation of the strongly bound O-gamma species is accompanied by a strong hybridization between O2p and Ag4d states and that also the Ag5sp states are important for the metal-to-oxygen covalent interaction. The reaction with methanol was used to selectively remove the surface-embedded atomic species and to study the effect of the strongly bound oxygen O-gamma species on the valence electronic structure of silver. This separation of the oxygen species did not work for the more reactive copper-oxygen system. The chemical bonding interaction of the novel O-gamma species with silver is discussed in terms of the ligand-field theory emphasizing the covalent character of the interaction. For copper, the spectroscopic analysis is complicated by the existence of a stable oxide Cu2O with similar bonding properties of the oxygen than postulated for the surface-embedded species in silver.
语种英语
WOS记录号WOS:A1997XK58700002
引用统计
被引频次:38[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142803
专题中国科学院大连化学物理研究所
作者单位1.DALIAN INST CHEM PHYS,STATE KEY LAB CATALYSIS,DALIAN 116023,PEOPLES R CHINA
2.RUHR UNIV BOCHUM,LEHRSTUHL TECH CHEM,D-44780 BOCHUM,GERMANY
推荐引用方式
GB/T 7714
SchedelNiedrig, T,Bao, X,Muhler, M,et al. Surface-embedded oxygen: Electronic structure of Ag(111) and Cu(poly) oxidized at atmospheric pressure[J]. BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS,1997,101(7):994-1006.
APA SchedelNiedrig, T,Bao, X,Muhler, M,&Schlogl, R.(1997).Surface-embedded oxygen: Electronic structure of Ag(111) and Cu(poly) oxidized at atmospheric pressure.BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS,101(7),994-1006.
MLA SchedelNiedrig, T,et al."Surface-embedded oxygen: Electronic structure of Ag(111) and Cu(poly) oxidized at atmospheric pressure".BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS 101.7(1997):994-1006.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[SchedelNiedrig, T]的文章
[Bao, X]的文章
[Muhler, M]的文章
百度学术
百度学术中相似的文章
[SchedelNiedrig, T]的文章
[Bao, X]的文章
[Muhler, M]的文章
必应学术
必应学术中相似的文章
[SchedelNiedrig, T]的文章
[Bao, X]的文章
[Muhler, M]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。