本文利用原位离子交换法制备了碳纳米管(CNTs)载铂(Pt/CNTs)电极.X射线光电子能谱分析表明, Pt通过离子交换载于电化学功能化的CNTs表面.扫描电镜照片显示, Pt高度分散于CNTs表面.X射线衍射分析表明, Pt的粒径约为4.0 nm.离子交换法所制Pt/CNTs电极的电化学表面积和Pt的利用率均大于传统Pt/CNTs电极(Pt粒径约为2.5 nm), 其对氧还原的催化活性高于传统电极.这归因于离子交换法所制电极的特殊结构,即Pt普遍载于电化学活性位上.
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