导电聚苯胺稳定的纳米铂的合成

Synthesis of Pt nanopaticles stabilized by polyaniline

在苯胺单体作为保护剂的条件下,用乙醇还原氯铂酸水溶液,制备了铂胶体;通过进一步加入氧化剂(过硫酸铵)和质子酸(盐酸)对苯胺进行掺杂,合成了导电聚苯胺稳定的纳米铂。采用透射电镜(TEM)和紫外可见光谱(UV-Vis)研究了整个合成过程,并采用循环伏安法对合成的纳米铂进行了电性能表征。结果表明,聚苯胺对铂粒子有很好的稳定作用,制备的纳米铂直径小于10nm,具有优异的电催化性能,在作为燃料电池电催化剂方面有着很好的应用前景。

With the protection of aniline monomer, Pt colloids were prepared by ethanol reduction, followed by adding of protonic acid （HCl） and oxidant （（NH4） S2O8）, then the Pt nanoparticles stabilized by conducting polyaniline were synthesized. The producing course was studied by TEM and UV - Vis, and the electro- property was tested by cyclic voltammograms. Experiment results showed polyaniline played an important role in controlling the size of Pt nanoparticles, and the size was less than 10 nm. The as- produced Pt nanoparticles had a finer electrocatalistic ability, which had a promised application in fuel cells.