甲醇在聚苯胺载铂电极上的电催化氧化

用循环伏安法在玻碳电极上电聚合导电高分子聚苯胺用于附载Pt，提高了Pt的分散度。发现甲醇在Pt／PAN／GC电极和Pt／GC电极上均能自发解离出强吸附中间体CO，证实聚苯胺膜的存在有利于提高电极对甲醇的电催化氧化活性，CO在Pt／PAN／GC电极上的氧化峰电流明显高于Pt／GC电极。通过比较甲醇的电催化氧化活性可知，Pt/PAN／GC电极催化氧化甲醇的峰电流为58．68mA/cm^2和50．00mA／cm^2，是Pt／GC电极氧化峰电流的1．6倍和1．7倍。

Electrocatalytic Oxidation of Methanol on Platinum Load on Polyaniline Electrode

Polyaniline was electropolymerized onto glassy carbon electrode to load Pt as electrode by means of circlic voltammetric method. The polyaniline was found to have a significant bearing on the size of the platinum deposits. It was found that methanol could dissociate spontaneously on Pt/PAN/GC electrode as it dissociated on Pt/GC electrode, producing strong absorption intermediate CO, the results demonstrated that polyaniline could improve the electrocatalytic activity of methanol on Pt/PAN/GC electrode. The oxidation current of CO on Pt/PAN/ GC electrode was significantly higher than that of Pt/GC electrode. The electroactivation of methanol oxidized on Pt/PAN/GC electrode and Pt/GC electrode were studied by circlic vohammetry. The oxidation currents of methanol on Pt/PAN/GC electrode were 58.68 mA/cm^2 and 50.00 mA/cm^2, which were 1.6 times and 1.7 times higher than those on Pt/GC electrode.