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由电化学方法在石墨电极表面制备了规整多孔的纳米结构聚N-乙酰苯胺(PAANI)膜,并以其为载体制备了Pt-Pd/PAANI/C二元金属微粒修饰的聚合物复合膜电极。SEM和XRD研究结果表明,Pt、Pd微粒在PAANI膜中均匀分散,有效地改善了催化剂中贵金属的分散度和电极的结构。在0.5mol/LH2SO4+0.5mol/LHCOOH溶液中的循环伏安结果表明,Pt-Pd/PAANI/C电极在酸性溶液中电催化氧化甲酸的性能明显优于直接电沉积的Pt-Pd/C电极,且表现出较高的稳定性。
A structured and porous nanostructured polyaniline (PAANI) membrane was prepared on the surface of graphite electrode by electrochemical method. Pt-Pd / PAANI / C binary metal particle modified polymer composite membrane electrode . SEM and XRD results show that the Pt and Pd particles are uniformly dispersed in the PAANI film, which effectively improves the dispersion of the noble metal and the structure of the electrode. The results of cyclic voltammetry in 0.5 mol / LH 2 SO 4 + 0.5 mol / LHCOOH solution show that the electrocatalytic oxidation of formic acid in Pt-Pd / PAANI / C electrode is better than that of Pt-Pd / C electrodeposited electrode , And showed higher stability.