SURFACE-ENHANCED RAMAN-SCATTERING FROM CHLORIDE ON COPPER ELECTRODES

被引：51

作者：

NIAURA, G

MALINAUSKAS, A

机构：

[1] Institute of Chemistry, Vilnius

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 207卷 / 4-6期

关键词：

D O I：

10.1016/0009-2614(93)89029-H

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：

A new method for the preparation of SERS active Cu electrode surfaces with high enhancement factors, which enable the observation of high quality spectra in the low-frequency region at different chloride concentrations, is proposed. Low-frequency modes at 160 and 145 cm-1 are attributed to Cu-Cu vibrations by isotopic (Cu-63/Cu-65) frequency shift. Qualitative agreement with predictions of the dipole-dipole coupling model are observed for Cu-Cl mode frequency dependence on Cl- ion concentration. A linear frequency nu(Cu-Cl) dependence on relative integrated SERS intensity for deactivated Cu electrodes has been found. Differences in concentration behaviour of the Cu-Cl mode for activated and deactivated Cu electrodes are discussed.

引用

页码：455 / 460

页数：6

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