油相稳定分散Fe_3O_4纳米粒子的制备研究  

Preparation of oil-based stabilized dispersion of Fe_3O_4 nanoparticles

作　　者：张和鹏[1] 张秋禹[1] 张宝亮[1] 范新龙[1] 雷星锋[1] 厉向杰[1] 

机构地区：[1]西北工业大学理学院应用化学系,陕西西安710072

出　　处：《现代化工》2012年第1期50-52,54,共4页Modern Chemical Industry

基　　金：国家"973"计划项目(2010CB635111);西北工业大学基础研究基金项目(G9KY1020);西北工业大学研究生创业种子基金资助项目(Z2011009)

摘　　要：分别采用热分解法及共沉淀油酸同步修饰法制备了2种可以在油相稳定分散的Fe3O4纳米粒子,并对热分解法制备Fe3O4纳米粒子的反应条件进行了优化,考察了热分解温度、熟化时间对颗粒粒径、形貌及磁性能的影响。通过TEM、VSM和FTIR等表征手段对2种方法制备的Fe3O4纳米粒子的油相分散稳定性、颗粒形貌及粒径、比饱和磁化强度及表面性质进行了比较。结果表明:热分解法制备的Fe3O4纳米粒子表现出更好的油相分散稳定性,共沉淀油酸同步修饰法制备的Fe3O4纳米粒子则表现出更好的磁响应性。Two kinds of oil-based stabilized dispersion of Fe304 nanoparticles were prepared by thermal decomposition and surface modification of water-based F3O4 nanoparticles synthesized by coprecipitation method. Process conditions for preparing Fe3O4 nanoparticles by thermal decomposition were optimized. The effects of thermal decomposition temperature and aging time on particles size, morphology and magnetic properties were studied. Oil-based stabilized dispersion, particles size and morphology, specific saturation magnetization and surface properties were characterized by TEM, VSM and FTIR. Compared with Fe3O4 nanoparticles prepared by surface modification,it is found that the stability of Fe3O4 nanoparticles prepared by thermal decomposition is better, but its magnetic response property is worse.

关 键 词：FE3O4 纳米粒子 热分解 表面修饰 

分 类 号：O614[理学—无机化学] TQ13[理学—化学]