纳米微球聚合物膜的构建及其修饰电极性能

The formation of a microsphere polymer film and the properties of its modified electrode

将一种核壳结构两亲性聚合物纳米微球修饰到玻碳电极表面,该微球组成是以质子化PDMAEMA大分子为壳以及聚苯乙烯为核(简称PDS)。在最优化成膜条件下,得到的PDS膜电极的电子传导能力明显优于裸电极。考察PDS膜对磷钼杂多酸(PMo12)修饰电极性能的影响。结果表明,PDS膜不仅可以使PMo12修饰电极的稳定性得到改善,而且有助于PMo12在电极表面的电子转移,从而有效提高PMo12的电化学及对IO3-的电催化性能。

An amphiphilic polymer film with core shell structure microspheres was modified onto the glassy car- bon（GC） electrode surface. The microspheres were composed of a PDMAEMA-protonated shell and a polystyrene core（short for PDS）. Under optimal conditions, the resulting PDS film enhanced the electron transfer of the elec- trode. Phosphomolybdic heteropoly acid （short for PMo12）, an electrocatalytic substance, was immobilized on the surface of PDS modified GC electrode. The results show that the negatively charged heteropolyacid ions can be stably attracted by positively charged microspheres,which improves the stability of the modified electrode. PDS film can also facilitate the electron transfer between the heteropoly acid and electrode,and enhance the electro- catalysis of heteropolyacid toward the IO3^-.