载钯聚苯胺/聚砜复合膜修饰电极对甲酸的电催化氧化

doi:10.3724/SP.J.1095.2014.30225

摘要/Abstract

摘要： 采用电化学聚合法在铂电极表面制备了三维网状结构的聚苯胺(PAN)/聚砜(PSF)复合膜，并以此为载体制备了Pd/PAN/PSF复合膜电极，并用扫描电子显微镜对复合膜的微观形貌进行了表征。结果显示，此复合膜具有双层多孔结构，Pd纳米粒子在复合膜上平均粒径小、分散性好，有效地改善了Pd粒子的分散度和电极结构。电化学测试结果表明，Pd/PAN/PSF复合膜修饰电极对甲酸的电催化性能明显优于直接电沉积Pd的聚苯胺电极，并且表现出较高的稳定性。

关键词: 钯/聚苯胺/聚砜复合膜电极, 电催化氧化, 甲酸, 交流阻抗

Abstract: A Pd nanopaticles modified polyaniline/polysulfone(PAN/PSF) composite film with three dimensional network structure(Pd/PAN/PSF) was prepared by using electropolymerization at the surface of Pt electrode. Its morphology was characterized by scanning electron microscopy. The results indicate that the composite film has a bi-layer structure with asymmetrical pores, and Pd nanoparticles with a small size are symmetrically dispersed in the film modified electrodes. The composite film effectively improved the dispersion of Pd and electrode structure. Compared with the Pd/PAN electrode fabricated by direct electrodeposition, the Pd/PAN/PSF composite film modified electrode exhibits better electrocatalytic activity and good stability than that of Pd/PAN film modified electrode towards formic acid oxidation.

Key words: Pd modified , polyaniline/polysulfone electrodes, electrocatalytic oxidation, formic aci, electrochemical impedance spectroscopy

中图分类号:

O646

冯晓娟, 张维娜, 安红钢. 载钯聚苯胺/聚砜复合膜修饰电极对甲酸的电催化氧化[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30225.

FENG Xiao juan*, ZHANG Weina, AN Honggang. Electrocatalytic Performance of Pd-modified Polyaniline/Polysulfone Composite Film Electrodes for Formic Acid Oxidation[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30225.

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