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OALib Journal期刊
ISSN: 2333-9721
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酸性溶液中过渡金属及合金纳米薄膜电极的异常红外效应研究
, PP. 25-30
Keywords: 纳米薄膜电极,CO吸附,异常红外效应,原位红外反射光谱
Abstract:
以循环伏安方法在玻碳载体上制备纳米级厚度的过渡金属(Pt,Pd,Rh,Ru)和合金(PtPd,PtRu)薄膜电极,并运用原位FTIR反射光谱研究了CO的吸附过程.发现所制备的纳米薄膜电极均具有异常红外效应,即与本体金属电极相比较,吸附在纳米薄膜电极上的CO分子的红外吸收被显著增强,并且红外谱峰方向倒反.本文的结果进一步证明异常红外效应是一种新的、普遍的现象,主要取决于过渡金属或合金膜的结构和厚度.对异常红外效应的深入认识,不仅将推动红外反射光谱及界面电化学理论的发展,而且将在表面和界面分析中得到广泛应用.
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