AN ELECTRON-ENERGY LOSS STUDY OF CARBON-DIOXIDE ADSORPTION ON ALKALI-METAL PREDOSED SILVER SURFACES

被引：21
作者：
MAYNARD, KJ
MOSKOVITS, M
机构：
[1] UNIV TORONTO,ONTARIO LASER & LIGHTWAVE CTR,TORONTO M5S 1A1,ONTARIO,CANADA
[2] UNIV TORONTO,DEPT CHEM,TORONTO M5S 1A1,ONTARIO,CANADA
来源：
SURFACE SCIENCE | 1990年 / 225卷 / 1-2期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1016/0039-6028(90)90421-4
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 interactions between carbon dioxide (CO2) and alkali metals on rough silver surfaces have been studied with electron energy loss spectroscopy (EELS). In the absence of alkali metal, CO2 is found to bind weakly to the silver surface. With either lithium, potassium or cesium present, a surface complex of the form M+ CO- 2 is formed, in agreement with a past Surface Enhanced Raman Scattering (SERS) investigation [J. Chem. Phys. 90 (1989) 6668] of the same systems. At sufficiently high CO2 exposures, CO2 adsorption also occurs. EELS and SERS spectra obtained from the same alkali-predosed silver surface, are often found to be dominated by different species leading to the conclusion that each of the two spectroscopies probes different regions of the rough surface with differing sensitivities. © 1990.
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页码：40 / 46
页数：7
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