超顺磁性氧化铁纳米晶的制备及性能研究Preparation of Super Para-magnetic Fe2O3 Nanocrystals and Their Properties
杜庆波,孙宗波,尹辉,范效东,徐永超,张伟
摘要(Abstract)：
以Fe(NO3)3·9H2O为铁源,以十六烷基三甲基溴化铵(CTAB)为表面活性剂,采用溶剂热法制备了α-Fe2O3纳米晶。利用X射线衍射仪、扫描电镜和透射电镜对所得产物进行了表征分析,并在室温下测量了其磁学性能。结果表明,所制备的α-Fe2O3纳米晶为斜方六面体结构,其平均尺寸为30~50 nm。在室温下测试了纳米晶的磁学性能,其饱和磁化强度、剩余磁化强度和矫顽力分别为0.37 emu/g、0.017 emu/g和104.4 Oe,都比较小,表现出一定的超顺磁性。这种Fe2O3超顺磁纳米晶可望被较好地应用于细胞或酶的固定化等生物和医药领域。
关键词(KeyWords)： Fe2O3;超顺磁性纳米晶;溶剂热法;磁学性能
基金项目(Foundation): 安徽省教育厅自然科学基金重点项目(KJ2011Z368);; 自旋电子与纳米材料安徽省重点实验室培育基地开放课题(2013YKF22)
作者(Author): 杜庆波,孙宗波,尹辉,范效东,徐永超,张伟
DOI: 10.16521/j.cnki.issn.1001-9642.2014.08.016
参考文献(References)：
- [1]Mamedov A.Ostrander J.Aliev F.et al.Stratified Assemblies of Magnetite Nanoparticles and Montmorillonite Prepared by the Layer-by-Layer Assembly[J].Langmuir:2000,16(8),3941-3949.
- [2]Pascal C.Pascal J.L.Favier F.et al.Electrochemical Synthesis for the Control ofγ-Fe2O3 Nanoparticle Size.Morphology,Microstructure,and Magnetic Behavior[J].Chem.Mater.1999,11,141-147.
- [3]Zhan S.H.Chen D.R.Jiao X.L.et al.Facile Fabrication of Longα-Fe2O3,α-Fe andγ-Fe2O3 Hollow Fibers Using Sol gel Combined Co-electrospinning Technology[J].J.Colliods Interface Sci.2007,308,265-270.
- [4]Chen,J.;Xu,L.;Li,W.;et al.α-Fe2O3 Nanotubes in Gas Sensor and Lithium-Ion Battery Applications[J].AdV.Mater:2005,17(5),582-586.
- [5]Cao,S.W.;Zhu,Y.J.Hierarchically Nanostructuredα-Fe2O3 Hollow Spheres:Preparation,Growth Mechanism,Photocatalytic Property,and Application in Water Treatment[J].J.Phys.Chem.C:2008,112(16),6253-6257.
- [6]Zhang X.L.Sui C.H.Gong J.et al.Preparation and Formation Mechanism of Differentα-Fe2O3Morphologies from Snowflake to Paired Microplates,Dumbbell,and Spindle Microstructures[J].J.Phys.Chem.C:2007,111(26),9049-9054.
- [7]Cao C.E.Du X.Chen Y.X.et al.Syntheses of Nuisanceless Ferric Oxide Red Famille-Rose Pigment[J].China Ceramics:2011,47(11):51-53,60.
- [8]Fu Y.Y.Wang R.M.Xu J.et al.Synthesis of Large Arrays of Aligned a-Fe2O3 Nanowires[J].Chem.Phys.Lett.2003,379(3-4)373-379.
- [9]Wang X.Chen X.Y.Gao L.S.et al.Synthesis ofβ-FeOOH and a-Fe2O3 Nanorods and Electrochemical Properties ofβ-FeOOH[J].J.Mater.Chem.2004,14,905-907.
- [10]Jia C.J.Sun L.D.Yan Z.G.et al.Single-Crystalline Iron Oxide Nanotubes[J].Angew.Chem.,Int.Ed.2005,44,4328.
- [11]Su X.Q.Yan B.The Synthesis and Luminescence of YPxV1-xO4:Dy3+Microcrystalline Phosphors by in situ Co-precipitation Composition of Hybrid Precursors[J].Mater.Chem.Phys.2005,93(2-3),552-556.
- [12]Wang L.L.Jiang J.S.Preparation of a-Fe2O3Nanoparticles by High-energy Ball Milling[J].Physica B:2007,390,23-27.
- [13]李国栋.当代磁学[M].合肥:中国科学技术大学出版社,1999.