静电纺丝技术制备NiFe_2O_4纳米纤维的表征  

Characterization of NiFe_2O_4 nanofibers prepared by electrospinning technique

作　　者：董相廷[1] 范立佳[1] 王进贤[1] 高续波[1] 刘桂霞[1] 

机构地区：[1]长春理工大学化学与环境工程学院,吉林长春130022

出　　处：《材料热处理学报》2010年第4期18-23,共6页Transactions of Materials and Heat Treatment

基　　金：吉林省科技发展计划重大项目(20070402;20060504);教育部科学技术研究重点项目(207026);长春市科技计划项目(2007045);吉林省教育厅"十一五"科学技术研究项目(2007-45;2006JYT05);吉林省环保局科技项目(2006-24)

摘　　要：采用溶胶-凝胶法与静电纺丝技术相结合制备了PVP/[Ni(NO3)2+Fe(NO3)3]复合纳米纤维,在一定温度下进行热处理,得到尖晶石结构的NiFe2O4纳米纤维。利用TG-DTA、XRD、FTIR、SEM、TEM等分析手段对样品的组成及结构进行表征。TG-DTA分析表明,PVP/[Ni(NO3)2+Fe(NO3)3]复合纳米纤维的热处理温度高于450℃以后,质量恒定,总失重率为87.8%。XRD与FTIR分析表明,热处理温度高于600℃时,复合纳米纤维已经完全转变成尖晶石结构的NiFe2O4纳米纤维。SEM分析表明,所制备的PVP/[Ni(NO3)2+Fe(NO3)3]复合纤维直径在250～300nm之间,NiFe2O4纳米纤维直径约100nm,长度大于200μm。对NiFe2O4纳米纤维的形成机理进行了探讨。PVP /[Ni（NO3）2 ＋ Fe（NO3）3]composite nanofibers were prepared by combination of electrospinning and sol-gle method.The spinel-typed NiFe2O4 nanofibers were obtained by calcination of the composite nano fibers at definite temperatures and were characterized by TG-DTA,XRD,FTIR,SEM and TEM.TG-DTA analysis indicates that the mass of the PVP /[Ni（NO3）2＋Fe（NO3）3 ]composite nanofibers keeps constant above 450℃,and the total weight loss rate is 87.8%.XRD and FTIR analysis reveals that spinel-typed NiFe2O4 nanofibers are completely formed above 600℃.SEM observation manifests that the diameter of the composite fibers is 250-300 nm.The diameter of NiFe2O4 nanofibers is about 100 nm,and the length is greater than 200 μm.The formation mechanism of the NiFe2O4 nanofibers is also discussed.

关 键 词：NIFE2O4 铁氧体 纳米纤维 静电纺丝技术 

分 类 号：TB34[一般工业技术—材料科学与工程]