聚2,5-二甲氧基苯胺膜电极对醌氢醌的电催化作用

Electrocatalytic effect of poly(2,5-Dimethoxyaniline) film electrode on quinonehydroquinone

研究表明电化学方法制备的聚2，5－二甲氧基苯腹膜电极（Ipdma/pt）对1mol·L(-1)HCl水溶液中醌氢醌具有很好的电催化作用讨论了酸度，对阴离子种类、反应物浓度、干扰物邻苯二酚对电催化作用的影响催化电流与醌氢醌浓度在一定浓度范围内呈现良好的线性关系。

The elecoatalytic behaviors of poly (2, 5 - Dirnethayaniline ) film eletrode (PDMA/Pt ) on quinonehydroquinone (QHQ) hav been ivestigated by cyclic voltammetry and rotaing disk electrode, the redox peak curren of QHQ at the poper film elecdrie is tens times greater than those at bare Pt electrode in 1 moL. L-1 HCl: solution. The difference between the redox peak Potentials at the PDMA/Pt electrode becomes obviously less than those at the bare Pt electrode, some important factors which affect electrocalytic reaction of QHQ at the PDMA/Pt electrode were discussed. The PDMA/Pt was vety stable, it can be used as a sensor for determining QHQ. The electrode Process at the Polymer film is a diffusion controlled one in the wide range of potental sweep rate.