纳米铁颗粒具有纳米粒子的独特性质，在微电子学、光学、电子学和磁学器件上有着广阔的应用前景。由于纳米铁颗粒在物理、化学和其它方面的特性主要是由粒子尺寸和形貌决定的，因此，合成尺寸及形貌可控的纳米铁颗粒对发展其应用是一个关键的因素。 用电化学方法合成纳米铁颗粒，具有设备简单、操作方便、易于控制、反应条件温和、所得到的纳米微粒纯度高、对环境污染少等优点，目前已成为一种有效的合成手段。 本文对纳米铁颗粒进行了电化学方法制备，将从稳定剂种类、稳定剂浓度、电流强度、电还原的时间以及溶液pH等方面对纳米铁颗粒的制备条件进行研究，归纳总结并分析结果，优化了电化学合成法制备纳米铁颗粒的条件，得出：当FeCl2浓度为0.01 M，保护剂十二烷基硫酸钠为16 mM，还原电流为-2.0 mA，还原电压为-2.0 V为最佳制备条件。并用扫描电子显微镜（SEM）及透射电子显微镜（TEM）对制得的纳米铁颗粒进行了表征。

Iron nanoparticles，with the unique characteristic of nanoparticles，has a bright future in microelectronical, optical, electronical and magnetic equipments. Synthesis of iron nanoparticles with controllable size and surface is a key factor to its use, because it is the size and surface that determine the physical, chemical and other characteristics. There are many advantages as follows to synthesze iron nanoparticles in electrochemical ways: simply equipment, convenient operation, easy to control, soft reaction conditions, high purity, less pollution and so on. It has already become an effective synthesizing method at present. This article will study the producing condition of Iron nanoparticles from various aspects such as the type of surfactant，the concentration of surfactant，electro-intensity,time of electrolyzation and ph of solutions. by carefully analyzing and summarizing the results, I improved the condition of eletrochemical synthesis of Iron nanoparticles。the best condition is 0.01M FeCl2,16 mM SDS(as protection), electrolyzing-current -2.0 mA, electrolyzing-voltage -2.0V.In addition, I characterize the product with SEM and TEM.