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电化学  2014 

Pt纳米空球粒径的可控制备及其甲醇电催化氧化

DOI: 10.13208/j.electrochem.140318, PP. 571-575

Keywords: 硒模板,铂空球,循环伏安,计时电流

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Abstract:

利用表面活性剂十二烷基磺酸钠(SDSN)的调控合成不同粒径的硒模板和铂纳米空球(Pthollow),并将其修饰于玻碳(GC)基底即可制得Pthollow/GC电极;采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HR-TEM)和X射线光电子能谱等观察表征了Pthollow样品的形貌与组成;以甲醇为探针分子,研究Pthollow/GC和电沉积铂电极(Ptnano/GC)对甲醇氧化的电催化活性.结果表明,由铂原子簇团构筑的多孔铂纳米空球粒径均匀,分散性好;用4μmol·L-1SDSN控制合成的直径为130nm的Pthollow制备的Pthollow/GC电极对甲醇氧化的电催化活性最佳.

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