用电化学循环伏安法和原位FTIR反射光谱法研究了Sb在碳载纳米Pt膜电极(nm-Pt/GC)表面不可逆吸附的电化学特性及酸性介质中乙醇的吸附和电催化氧化特性.结果指出,当扫描电位的上限Eu≤0.50V(SCE)时,Sbad可以稳定地吸附在nm-Pt/GC电极表面.与未修饰的nm-Pt/GC电极上结果相比,Sbad修饰的nm-Pt/GC/Sbad/(nm-Pt/GC)的催化活性显著增加.测得当覆盖度θsb=0.137时,修饰电极对乙醇的电催化活性最高,乙醇氧化的峰电位负移了0.15V,峰电流增大了1倍.原位FTIR反射光谱的结果从分子水平揭示了Sb修饰对乙醇氧化反应途径的选择功能.
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