溶剂热法制备氨基修饰的Fe_3O_4纳米粒子及其性能  

Solvothermal synthesis and properties of amino-coated Fe_3O_4 nanoparticles

作　　者：胡欣[1] 蔡朝霞[1] 马美湖[1] 

机构地区：[1]华中农业大学国家蛋品加工技术研发分中心,湖北武汉430070

出　　处：《磁性材料及器件》2011年第5期32-35,共4页Journal of Magnetic Materials and Devices

基　　金：现代农业产业技术体系建设专项资金资助项目(nycytx-41-g22)

摘　　要：采用溶剂热法以FeCl3.6H2O、乙二醇和聚乙烯亚胺为原料,一步法制备氨基修饰的Fe3O4纳米粒子。并利用X射线衍射、扫描电子显微镜、振动样品磁强计和红外光谱等方法对产物进行分析和表征。研究了反应釜填充度、反应时间、Fe3+初始浓度以及NaAC的浓度对反应产物的影响,结果表明:反应釜填充度、反应时间、Fe3+初始浓度对最终产物有重要影响,NaAC浓度主要影响反应产物的分散性。不同反应条件下生成的产物均为反尖晶石结构,当制备条件为Fe3+初始浓度0.05 mol/L、反应12h时得到的纳米粒子粒径30 nm左右,饱和磁化强度为64.9 A.m2/kg。Magnetite nanoparticles （Fe304） were synthesized by solvothermal method at 200℃, using FeCIs-6H2O, ethylene glycol and PEI as reactants. X-ray diffraction, transmission electron microscope, vibrating sample magnetometer and infrared spectrometer were used to characterize the magnetite nanoparticles. The influence of reaction time, initial concentration of Fe^3＋ and concentration of NaAC on the products was studied. The results showed that the products are magnetite crystals. For the conditions of reaction time of 12h and initial Fe^3＋ concentration of 0.05mol/L, the sample has an average partial size of 30nm, and saturation magnetization of 64.9A-m2/kg.

关 键 词：溶剂热法 FE3O4纳米粒子 聚乙烯亚胺 氨基修饰 

分 类 号：TM277[一般工业技术—材料科学与工程]