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电化学  2010 

一氧化碳在钯薄膜修饰的金电极上的电氧化-厚度的影响(英文)

, PP. 279-284

Keywords: CO电氧化,Pd薄膜,d能带理论,表面增强拉曼散射

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Abstract:

采用扫描循环伏安法及表面增强拉曼散射光谱研究了一氧化碳(CO)在钯修饰金电极上的吸附与氧化.结果表明CO氧化电位随钯膜厚度增加而正移,同时C—O伸缩振动频率红移.本文利用d能带理论解释观察现象.应力效应使CO吸附变强,难以氧化;但配体效应使CO吸附变弱,易于氧化.在薄膜中配体效应强于应力效应.

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