Surface-embedded oxygen: Electronic structure of Ag(111) and Cu(poly) oxidized at atmospheric pressure
文献类型：期刊论文
| 作者 | SchedelNiedrig, T; Bao, X; Muhler, M; Schlogl, R |
| 刊名 | berichte der bunsen-gesellschaft-physical chemistry chemical physics
 |
| 出版日期 | 1997-07-01 |
| 卷号 | 101期号:7页码:994-1006 |
| 关键词 | adsorption catalysis spectroscopy spectroscopy photoelectron X-ray |
| 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. |
| 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 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:A1997XK58700002 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/142803]  |
| 专题 | 大连化学物理研究所_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. |
入库方式： OAI收割
来源：大连化学物理研究所
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