The formation of carbonate on Ag(110) studied by high-resolution EELS

被引：12

作者：

Constant, L ^{[1
]}

Krenzer, B ^{[1
]}

Stenzel, W ^{[1
]}

Conrad, H ^{[1
]}

Bradshaw, AM ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

SURFACE SCIENCE | 1999年 / 427-28卷

关键词：

carbonate; carbon dioxide; electron energy loss spectroscopy; silver; single crystal surfaces; surface chemical reaction;

D O I：

10.1016/S0039-6028(99)00276-9

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 formation of carbonate species (CO(3)) on Ag(110) by exposure of the (4 x 1) oxygen-reconstructed surface to CO, has been studied with high-resolution electron energy loss spectroscopy (HREELS). The position and shape of the CO(3)-related loss peaks were found to depend on the long-range order in the carbonate layer, as observed with LEED. In addition to the gamma, v(s) and v(as) modes of CO(3) at 833, 1050 and 1343 cm(-1), two separate peaks in the Ag-CO(3) frequency region occur at 277 and 239 cm(-1). The latter is particularly sensitive to disorder. Coadsorbed CO(2), which is stabilized by the CO(3), exhibits vibrations that are almost unchanged compared to the gas phase values. although the Fermi resonance appears to be largely suppressed. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：262 / 267

页数：6

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