介孔碳纳米纤维为载体的铂催化剂的制备及电化学性质

摘要

Ordered mesoporous carbon nanofibers were prepared by combining the soft template synthesis method of mesoporous carbons with the confinement of channels of anode alumina membranes. The ordered mesoporous carbon nanofibers as supports for loading Pt nanoparticles were obtained using a noncovalent method and ethylene glycol reduction. The results indicate that the mild functionalization method is beneficial for conservation of mesostructure of supports and distribution of Pt nanoparticles. Moreover, the condition of reduction is very important for the load of Pt nanoparticles. The electrochemical properties of Pt-catalyst were studied by cyclic voltammogram. The results show that the Pt-catalysts possess excellent methanol electrocata-lytic activity and stability.%利用介孔碳的软模板合成方法和阳极氧化铝膜(AAMs)的孔道限域性制备有序的介孔碳纳米纤维.以介孔碳纳米纤维作载体,采用温和的非共价方法和乙二醇还原法负载铂纳米粒子制备铂催化剂.结果表明,温和的功能化方法有利于载体介孔结构的保持和铂纳米粒子的分散,且还原反应条件对铂纳米粒子的负载具有重要影响.通过循环伏安法研究了铂催化剂的电化学性质,结果表明,这些铂催化剂具有良好的甲醇电催化活性和稳定性.