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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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Pt及其修饰电极上甲醇吸附和氧化的CV和EQCM研究
, PP. 452-458
Keywords: 石英晶体微天平,Pt电极,修饰电极,甲醇
Abstract:
运用电化学循环伏安和石英晶体微天平(EQCM)研究了0.1mol·L-1H2SO4溶液中甲醇在Pt电极和以Sb,S不可逆吸附原子修饰的Pt(Pt/Sbad和Pt/Sad)电极上的吸附和氧化过程.结果表明甲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,可显著提高甲醇电催化氧化活性.与Pt电极相比较,Sb吸附原子修饰的Pt电极使甲醇氧化的峰电位负移了0.13V.相反,Pt电极表面S吸附原子的氧化会消耗表面氧物种,抑制了甲醇的电氧化.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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