应用电化学循环伏安和石英晶体微天平(EQCM)研究了1,3-丁二醇(1,3-BDL)在Pt电极和以Sb、S吸附原子修饰的Pt(Pt/Sbad和Pt/Sad)电极上的吸附和氧化过程.从电极表面质量变化的结果分析,可认为1,3-丁二醇的氧化与电极表面氧物种有着极其密切的关系.Pt电极表面Sb吸附原子能在较低的电位下吸附氧,可显著提高1,3-丁二醇电催化氧化活性.与Pt电极相比较,饱和吸附Sb原子的Pt电极,1,3-丁二醇氧化的峰电位负移了0.25V,峰电流增加了近1倍.相反,Pt电极表面S吸附原子的氧化会消耗表面氧物种,饱和吸附S原子的Pt电极上1,3-丁二醇的电氧化受到抑制.本文从表面质量变化提供了吸附原子电催化作用的新数据.
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