摘要
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。
Porous poly（N-acetylaniline） film modified with Pt and Pd particles was prepared by cyclic voltammetry method at the surface of carbon electrode. XRD and SEM results indicated that the Pt-Pd microparticles were uniformly dispersed on the surface of PAANI film. The electrocatalytic activity of Pt-Pd/PAANI/C electrode for the formic acid oxidation in 0.5mol/L HCOOH ＋ 0.5mol/L H2 SO4 was investigated. Results showed that the electrochemical characterization of Pt-Pd/PAANI/C exhibits better electrocatalytic activity and good stability towards formic acid oxidation in comparison to that of Pt-Pd/C.
出处
《化学通报》
CAS
CSCD
北大核心
2009年第7期644-648,共5页
Chemistry
基金
广西青年科学基金项目(0728043)
广西教育厅科研项目(桂教科研[2006]26号)
广西师范大学青年骨干教师基金项目
广西师范大学研究生教育创新计划项目(2008M021)资助
关键词
聚N-乙酰苯胺
铂钯微粒
电催化氧化
甲酸
Poly（N-acetylaniline）, Pt-Pd microparticles, Electrocatalytic oxidation, Formic acid
