载钯聚苯胺/聚砜复合膜修饰电极对甲酸的电催化氧化  

Electrocatalytic Performance of Pd-modified Polyaniline/Polysulfone Composite Film Electrodes for Formic Acid Oxidation

作　　者：冯晓娟[1] 张维娜[1] 安红钢[1] 

机构地区：[1]河西学院化学化工学院,甘肃省高校河西走廊特色资源利用省级重点实验室,张掖734000

出　　处：《应用化学》2014年第3期336-341,共6页Chinese Journal of Applied Chemistry

基　　金：河西学院西部资源环境化学重点实验室基金资助项目(XZ0706)~~

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。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 hi-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 electroeatalytic activity and good stability than that of Pd/PAN film modified electrode towards formic acid oxidation.

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 

分 类 号：O646[理学—物理化学]