摘要：

采用电化学电位阶跃技术（CA），在GC基底上制备出Fe3O4纳米粒子电催化剂；通过SEM和TEM对其表面形貌进行表征。结果表明，所制备的Fe₃O₄ 纳米粒子呈纳米片状结构，且分布较均匀，片的厚度约为10nm。选区电子衍射（SAED）结果显示，片状结构的Fe₃O₄ 为多晶结构。所制得的Fe₃O₄ 纳米粒子具有类似天然过氧化物酶活性，对H2O2

Abstract:

The nanostructured Fe₃O₄  was electrodeposited on glassy carbon（GC）electrode by chronoamperometry（CA）in alkaline solutions .The prepared nanostructured Fe₃O₄  was characterized by scanning electron microscopy（SEM）and transmission electron microscopy（TEM）.The results showed that the nanocrystal Fe₃O₄ was composed of nanosheets，and the thickness of nanosheets was about 10 nm.The selected area electron diffraction（SAED