一种新型的有机-无机复合膜对水中溴酸盐的电化学检测

The Electrochemical Detection of BrO_3^-in Water Based on a New Organic-Inorganic Compound Film

通过层层组装技术,将聚丙烯胺盐酸(PAH)和磷钼酸(PMo12)2种组分组装到玻璃碳电极(GCE)上,制备了1种新型的有机-无机复合膜。采用循环伏安法测定复合膜的电化学行为,证明了PAH/PMo12复合膜不仅可以均匀稳定地增长,而且具有良好的稳定性。此外,经研究发现此种复合膜对水中溴酸盐和亚硝酸盐等污染物表现出良好的电催化活性,为水体中污染物的电化学检测提供了理论依据。

The compound films containing of polyallylamine hydrochloride（PAH）and 12-molybdophosphate（PMo12）have been fabricated on glassy carbon electrode（GCE）by the layer-by-layer（LBL）selfassembly technique.The electrochemical behavior of PAH/PMo12 compound films was investigated.Theresults showed that the growth of the films was reproducible and the modified electrode was very stable.Moreover,the films presented good catalytic activity toward to the pollutants in water such as NO2-and BrO3-,valuable information was provided for the electrochemical detection of the pollutants in water.