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电化学  2014 

镍电极表面吸附的苯并咪唑电化学SERS研究

DOI: 10.13208/j.electrochem.131172, PP. 349-352

Keywords: 电化学,表面增强拉曼光谱,镍电极,苯并咪唑

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Abstract:

利用电化学循环伏安和极化曲线,考察了镍电极在不同浓度苯并咪唑(BMIH)-乙腈体系的缓蚀效果.结果表明,随着缓蚀剂BIMH浓度的增加,其氧化电位正移,且氧化电流降低,腐蚀电位正移.调制电位下测试镍电极表面BMIH吸附的现场表面增强拉曼光谱(SERS).随电位正移,BIMH可在镍电极表面吸附成膜,与金属镍生成配合物,阻止镍电极的腐蚀.并考察了不同浓度BIMH的成膜行为.结果发现,0.001mol·L-1BIMH即可在镍电极表面成膜,这表明非水乙腈体系的镍表面,BMIH有较佳的缓蚀效果.

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