聚乙二醇改性锰锌铁氧体纳米颗粒的制备及应用  

PREPARATION AND APPLICATION OF Mn-Zn FERRITE NANOPARTICLES MODIFIED BY POLYETHYLENE GLYCOL

作　　者：曹雪[1] 洪若瑜[1,2] 

机构地区：[1]苏州大学材料与化学化工学部,江苏省有机合成重点实验室,江苏苏州215123 [2]中国科学院过程工程研究所多相反应与复杂系统国家重点实验室,北京100080

出　　处：《精细石油化工》2010年第4期53-56,共4页Speciality Petrochemicals

基　　金：国家自然科学基金项目(No.20876100和No.20736004);国家973项目(No.2009CB219904);中科院工程研究所多相反应复杂系统国家重点实验室(2006-5)项目;国家博士后基金(20090451176);江苏省博士后基金;苏州市科技局基金项目(2009-SD-1和YJS0917);有机合成江苏省重点实验室项目;南京医科大学研发基金项目(NY0586)

摘　　要：实验以聚乙二醇-6000为改性剂,采用化学共沉淀法制备Mn_(0.8)Zn_(0.2)Fe_2O_4纳米颗粒。并以XRD、TEM、IR、TG-DSC及VSM对其结构、形貌和磁性能进行表征。实验结果表明,制备的锰锌铁氧体纳米颗粒呈球形,平均粒径为80 nm,饱和磁化强度达41 emu/g。探索了锰锌铁氧体纳米颗粒在给定交变磁场下的体外升温作用,结果表明可以通过控制电流强度和磁性流体的含量来实现磁性流体的控温。Mn0.8 Zn0.2 Fe2O4 magnetic nanoparticles were synthesized by co-precipitation with PEG-6000 as the surface modifier. XRD, TEM, VSM and FT-IR were used to study the effect of the surfactants on crystal structure, crystalline size, microstructure and magnetic properties. The results demonstrated that the synthesized nanoparticles had an average size of 80 nm and the saturation magnetization reached 41 emu/g. The in-vitro heating experiments were performed, and the effect of Mn0.8Zn0.2Fe2O4 concentration and magnetic field intensity on the heating property were also investigated. Through heating test, it was found that the heating temperature can be controlled by adjusting the concentration of the magnetic fluid and the strength of electrical current.

关 键 词：锰锌铁氧体 聚乙二醇-6000 磁性纳米粒子 共沉淀 

分 类 号：TQ584.2[化学工程—精细化工]