过渡金属取代磷钼酸修饰铂电极的电化学行为

Electrochemical Behavior of Transition Metal Substituted Phosphomolybdic Acid Modified Platinum Electrode

摘要:

在证实了磷钼酸修饰铂电极对甲醇氧化具有较高活性的基础上，合成了3种过渡金属取代的磷钼酸，通过红外光谱测试仍为Keggin结构，并制备了过渡金属取代磷钼酸修饰铂电极，研究了修饰铂电极在硫酸溶液中的电化学行为及对甲醇的催化氧化作用。研究结果表明，3种过渡金属取代的磷钼酸修饰铂电极均对甲醇氧化表现出较高的催化活性，其中锰取代的磷钼酸修饰电极对甲醇的催化活性最高。

Abstract:

On the basis of ascertaining that phosphomolybdic acid modified platinum electrode has higher catalytic activity to methanol oxidation, three kinds of transition metal substituted phosphomolybdic acids were synthesized, and the IR spectrum indicated that the compounds still kept Keggin structure. The transition metal substituted phosphomolybdic acid modified platinum electrodes were prepared, and the electrochemical behaviors of the transition metal substituted phosphomolybdic acid modified platinum electrodes and their electrocatalytic effects to methanol oxidation were studied. Meanwhile, the results showed that the three kinds of heteropolyacid modified platinum electrodes had higher electrocatalytic activity to methanol oxidation, manganese substituted phosphomolybdic acid modified platinum electrode had the highest electrocatalytic activity among them.