摘要
以FeCl3和FeSO4为铁源,以煤油为载液,用油酸为表面改性剂,采用一步法制备煤油基Fe3O4磁性流体。研究发现油酸可以成功地包覆在磁性颗粒表面,Fe3O4磁性颗粒平均粒径为10~20nm,晶型为反尖晶石型;磁性流体磁化率为6.53×10^-4,磁化强度为20.9emu/g,可以长期稳定存在。
Using FeCl3 and FeSO4 as iron sources, kerosene as carrier liquid and oleic acid as surface modification a- gent, kerosenc-hased magnetic fluid was prepared by a one-step method. It was found that the nanoparticles were coated successfully by oleic acid. The mean size of the magnetic nanoparticles were about 10-20nm, and their morphology was inverse spinel. The synthesized magnetic fluid demonstrated excellent stability, and had susceptibility of 6.53×10^- 4 and saturation magnetization of 20.9emu/g.
出处
《化工新型材料》
CAS
CSCD
北大核心
2008年第9期47-48,59,共3页
New Chemical Materials
基金
国家自然科学基金(编号:20476065
20736004)
中科院过程所多相反应与复杂系统国家重点实验室基金(编号:2006-5)
中科院煤化所煤转化国家重点实验室基金(编号:2006-902)
南京医科大学研发基金(NY0586)
关键词
磁性流体
纳米粒子
表面改性
magnetic fluid, nanoparticle, surface modification
