Temporal evolution of Raman intensities on surface-enhanced Raman scattering active copper and gold electrodes at negative potentials

被引：18

作者：

Kudelski, A ^{[1
]}

Bukowska, J ^{[1
]}

机构：

[1] UNIV WARSAW,DEPT CHEM,PL-02093 WARSAW,POLAND

来源：

VIBRATIONAL SPECTROSCOPY | 1996年 / 10卷 / 02期

关键词：

Raman spectrometry; surface-enhanced Raman scattering; copper electrodes; gold electrodes; roughening; pyridine;

D O I：

10.1016/0924-2031(95)00056-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The effect of a roughening procedure on surface-enhanced Raman scattering (SERS) intensity of pyridine at copper and gold electrodes subjected to negative potential has been investigated. Among four procedures tested for a copper electrode the one consisting of electrochemical activation in a solution of LiCl and CuCl2 resulted in the most stable and effective surface. It was proved that the presence of pyridine during the pretreatment procedure caused a very fast, irreversible decay of SERS intensity for both copper and gold electrodes. Quite stable, at least at room temperatures, gold surfaces were obtained by oxidation-reduction cycles activation in KCl solution.

引用

页码：335 / 339

页数：5

共 21 条

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