化学还原法制备Fe_3O_4纳米颗粒及其性能研究  

Synthesis of Fe_3O_4 nanoparticles and magnetic properties by chemical reduction

作　　者：冯辉霞[1] 陈柏屹[1] 张德懿[1] 雒和明[1] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《功能材料》2013年第10期1447-1450,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51063003);甘肃省自然科学基金资助项目(ZS021-A25-028-C;3ZS062-B25-027;3ZS-042-B25-008;0809DJZA011);国家科技部"科技人员服务企业行动项目"(2009GJG10041);甘肃省高校基本科研业务费资助项目(1105ZTC136)

摘　　要：采用化学还原法制备得到了Fe3O4纳米颗粒,并用XRD对制备条件:分散剂种类、分散剂用量、煅烧温度、煅烧时间进行了研究。研究结果表明,当选用PEG(6000)做分散剂,PEG用量为50g/L,煅烧温度为700℃,煅烧时间为120min时,制备得到的Fe3O4纳米颗粒已经具有晶型完整的反尖晶石结构。将该样品做VSM分析,分析结果表明样品饱和磁化强度可达85A.m2/kg,并且矫顽力趋近于0,呈现出良好的顺磁性。In this paper, magnetite nano-particals were rapidly prepared using a chemical reduction method. The effects of dispersant type and its dosage, calcining temperature and calcining time were studied by X-ray powder diffraetion（XRD）. The results present that the conditions to obtain the magnetite nano-particals with a perfect inverse spinel type structure are the dispersant type of PEG（6000）, the dispersant dosage of 50g/L, the calcining temperature of 700℃, the calcining time of 120min. The VSM analysis demonstrate that the saturation magnetization of the magnetite nano-particals was 85A.m^2/kg, and the samples showed strong paramagnetism due to its coercivity tending to 0.

关 键 词：FE3O4纳米颗粒 化学还原法 分散剂 聚乙二醇(PEG) 磁性能 

分 类 号：TQ586.1[化学工程—精细化工] TQ016