锌电极表面氧化成膜过程的现场拉曼光谱研究  

Surface-Enhanced Raman Spectra Studies on Roughened Zn Electrode in Alkaline Solutions

作　　者：沈晓英[1] 刘国坤[2] 顾仁敖[1] 田中群[2] 

机构地区：[1]苏州大学化学化工学院,江苏苏州215006 [2]厦门大学化学系,福建厦门361005

出　　处：《光谱学与光谱分析》2005年第9期1418-1421,共4页Spectroscopy and Spectral Analysis

基　　金：厦门大学固体表面物理化学国家重点实验室开放课题资助项目

摘　　要：利用电化学氧化还原法获得了具有SERS活性的粗糙锌电极,现场检测了其在不同浓度氢氧化钾溶液中随电位变化的表面拉曼光谱。锌氧化物拉曼信号在不同浓度氢氧化钾溶液中存在着很大的差异,说明氢氧根离子浓度对锌的氧化过程有很大的影响。根据所得拉曼谱图,作者尝试着给出不同浓度氢氧化钾溶液中锌的成膜过程及机理。Electrochemical oxidation-reduction method was employed to roughen Zn electrode for obtaining SERS, and potential dependent surface enhanced Raman spectra （SERS） of roughened Zn electrode in KOH solution of different concentration wereobserved. The spectra of Zn electrode in various solutions had obvious differences which indicated the concentration of OH^- had a great effect on the dissolution and passivation of zinc. Based on our experimental results, the authors attempt to analyse the behavior of zinc in alkaline and give the mechanism of its passivation.

关 键 词：锌电极 氧化 钝化 表面增强拉曼光谱 

分 类 号：O657.3[理学—分析化学]