Abstract:

Iron nanoparticles were uniformly deposited on glassy carbon electrode by electrochemical cyclic voltammetry，and the Fe core/Pt shell nanoparticles were further obtained through “galvanic replacement”.SEM observation illustrated that the cuboid nanoparticles dispersing uniformly on GC surface.The electrocatalytical properties for ethanol oxidation of the nano-Pt/GC，nano-FePt/GC were studied by cyclic voltammetry（CV）.The nano-FePt/GC electrode shows high electrocatalytical activity.The catalytic activity is in the order of：nano-Pt/GC＜nano-FePt/GC.The onset potential（Ei）of ethanol oxidation on nano-FePt/GC electrode is negatively shifted 0.044 V，and the steady oxidation current density（jp）is enhanced about 2.16 times，compared with nano-Pt/GC electrode.

摘要：

通过循环伏安法（CV）在玻碳（GC）表面电沉积出分布较为均匀的纳米Fe粒子，制得纳米Fe/GC，再经置换反应制得具有Fe核Pt壳结构的纳米粒子（纳米FePt/GC）。SEM图像显示，纳米Fe/GC和纳米FePt/GC表面粒子的形貌均呈立方体，且分布较为均匀。纳米FePt/GC对乙醇的氧化具有很高的电催化活性。相对于纳米Pt/GC催化剂，纳米