油酸改性的二甲苯基Fe_3O_4磁流体的制备及表征  

Preparation and characterization of xylene-based Fe_3O_4 ferrofluid modified by oleic acid

作　　者：任志强[1] 巩驰昊[1] 吴有金[1] 洪若瑜[1] 

机构地区：[1]苏州大学化学化工学院江苏省有机合成重点实验室,江苏苏州215123

出　　处：《材料研究与应用》2008年第1期18-21,共4页Materials Research and Application

基　　金：国家自然科学基金(20476065);中国科学院过程工程研究所多相反应国家重点实验室基金(2003-2);中国科学院煤炭化学研究所煤转化国家重点实验室基金(2006-902);合成化学江苏省重点实验室基金(ZY109601);南京医科大学研发基金(NY0586)

摘　　要：以FeCl3和FeSO4为铁源，采用化学共沉淀法合成磁性Fe3O4纳米磁胶粒，然以二甲苯为溶剂，用油酸对Fe3O4纳米微粒进行表面改性，制备二甲苯基Fe3O4磁流体．该磁流体具有良好的稳定性及超顺磁性．磁流体中Fe3O4磁性颗粒的平均粒径为10～20nm，晶型为反尖晶石型．Using FeCl3 and FeSO4 as iron sources, Fe3O4 magnetic nanoparticles were synthesized by chemical co-precipitation. Afterwards, using xylene as solvent, Fe3O4 magnetic nanoparticles were modified by oleic acid, and stable xylene-based magnetic fluid was obtained. It was found that the diameter of the magnetic nanoparticles were 10-20 nm, morphology were inverse spinel. The magnetic fluid exhibits apparent superparamagnetism and can stable for long time

关 键 词：共沉淀法 二甲苯基 磁流体 

分 类 号：TQ138.1[化学工程—无机化工]