Alkali-promoted stabilization of subsurface oxygen on Cu(111)

被引：11

作者：

Politano, A. ^{[1
,2
,3
]}

Marino, A. R. ^{[2
]}

Chiarello, G. ^{[2
,4
]}

机构：

[1] Univ Autonoma Madrid, Inst Madrileno Estudios Avanzados IMDEA Nanocienc, E-28049 Madrid, Spain

[2] Univ Calabria, Dipartimento Fis, I-87036 Arcavacata Di Rende, Cs, Italy

[3] Univ Autonoma Madrid, Dept Fis Mat Condensada, E-28049 Madrid, Spain

[4] Consorzio Nazl Interuniv Sci Fis Mat, CNISM, I-00146 Rome, Italy

来源：

CHEMICAL PHYSICS | 2010年 / 367卷 / 2-3期

关键词：

Electron energy loss spectroscopy (EELS); Alkalis; Subsurface oxygen; Copper; METAL-MEDIATED ZINCATION; DIRECTED ORTHO-METALATION; TERTIARY AROMATIC AMIDE; VIBRATIONAL MEASUREMENTS; ETHYLENE EPOXIDATION; STRUCTURAL INSIGHTS; TRANSITION-METALS; MOLECULAR-OXYGEN; ADSORPTION; SURFACE;

D O I：

10.1016/j.chemphys.2009.11.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The coadsorption of alkalis (Na, K) with O on Cu(1 1 1) and Ni(1 1 1) surfaces was studied by vibrational measurements. We found that doping the Cu(1 1 1) surface with small amounts of alkalis reverses the energetic conditions for oxygen adsorption so as to render energetically favorable the population of subsurface sites. Such mechanism is not effective for the alkali-modified Ni(1 1 1) surface. (C) 2009 Elsevier B. V. All rights reserved.

引用

页码：148 / 151

页数：4

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