本文以FeSO_4·7H_2O为铁源,采用LSS反应机制控制合成了Fe_3O_4单晶纳米棒和量子点,并根据不同反应条件下反应生成的产物形貌推断了反应机理.采用X-射线衍射仪(XRD)、透射电子显微镜(TEM)对产物进行表征.室温下分别测试了Fe_3O_4单晶纳米棒和量子点的磁滞回线,检测得到纳米棒和量子点饱和磁化强度磁化率(Ms)分别为44.26 emu/g和60.09 emu/g,矫顽力(H_c)分别为132.3 Oe和143.2 Oe.
Single-crystal Fe_3O_4 nanorods and quantum dots were synthesized by LSS method using FeSO_4·7H_2O as iron source. Because of the different morphology under the different reaction conditions, the reaction mechanism were extrapolated according to the morphology of products prepared at different reaction conditions. The as-prepared Fe_3O_4 samples were characterized by X-ray powder diffraction (XRD) and transmission electron microscope(TEM). The hysteresis curve of the synthesized Fe_3O_4 nanorods and quantum dots were measured at room temperature. The results showed that the magnetic susceptibilities (Ms) of the nanorods and quantum dots were 44.26 emu/g and 60.09 emu/g, and the coercive forces (H_c) were 132.3 Oe and 143.2 Oe.
参考文献
| [1] | Jozefczak A .Acoustic properties of PEG biocompatible magnetic fluid under perpendicular magnetic field[J].Journal of Magnetism and Magnetic Materials,2005(1):240-244. |
| [2] | Yu LQ.;Yang JX.;Zheng LJ. .Study of preparation and properties on magnetization and stability for ferromagnetic fluids[J].Materials Chemistry and Physics,2000(1):6-9. |
| [3] | Zhang Y;Zhang J .Surface modification of monodisperse magnetite nanoparticles for improved intracellular uptake to breast cancer cells[J].Journal of Colloid and Interface Science,2005(2):352-357. |
| [4] | Cheng FY;Su CH;Yang YS;Yeh CS;Tsai CY;Wu CL;Wu MT;Shieh DB .Characterization of aqueous dispersions of Fe(3)O(4) nanoparticles and their biomedical applications.[J].Biomaterials,2005(7):729-738. |
| [5] | R.P. Pant;S.K. Dhawan;N.D. Kataria .Investigations on ferrofluid-conducting polymer composite and its application[J].Journal of Magnetism and Magnetic Materials,2002(1/3):16-19. |
| [6] | 铁晨阳,包建春,徐正.制备条件对金属纳米线阵列磁性的影响[J].材料研究学报,2002(05):463-468. |
| [7] | Patrick D;Mcgary;Tan L W et al.Magnetic Nanowires for Acoustic Sensors[J].Journal of Applied Physics,2006,99(08):B310-B315. |
| [8] | Chou SY.;Zhang W.;Guo LJ.;Zhuang L.;Krauss PR. .SUB-10 NM IMPRINT LITHOGRAPHY AND APPLICATIONS[J].Journal of Vacuum Science & Technology, B. Microelectronics and Nanometer Structures: Processing, Measurement and Phenomena,1997(6):2897-2904. |
| [9] | Wu MZ;Xiong Y;Jia YS;Niu HL;Qi HP;Ye J;Chen QW .Magnetic field-assisted hydrothermal growth of chain-like nanostructure of magnetite[J].Chemical Physics Letters,2005(4-6):374-379. |
| [10] | Huang ZB;Zhang YQ;Tang FQ .Solution-phase synthesis of single-crystalline magnetic nanowires with high aspect ratio and uniformity[J].Chemical communications,2005(3):342-344. |
| [11] | Xue D S;Zhang L Y;Gui A B et al.Fe_3O_4 Nanowires Arrays Synthesized in AAO Templates[J].Applied Physics A:Materials Science and Processing,2004,80:439-442. |
| [12] | Xun Wang;Jing Zhuang;Qing Peng;Yadong Li .A general strategy for nanocrystal synthesis[J].Nature,2005(7055):121-124. |
| [13] | Shen L F;Laibinis P E;Hatton A T .Bilayer Surfactant Stabilized Magnetic Fluids:Synthesis and Interactions at Interfaces[J].Langmuir,1999,15(02):447-453. |
| [14] | 李学慧;吴业.磁流体的制备[J].化学世界,1998(01):15-17. |
| [15] | Tiddy G J T .Surfactant-water Liquid Crysal Phases[J].PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS,1980,57:1-46. |
| [16] | 张金中;王中林;刘俊.自组装纳米结构[M].北京:化学工业出版社,2005:15-16. |
| [17] | Aharoni A.;Jakubovics J.P. .Cylindrical domains in small ferromagnetic spheres with cubic anisotropy[J].IEEE Transactions on Magnetics,1988(2):1892-1894. |
| [18] | 刘奕,高勇谦,郭范.磁性Fe3O4六方片状晶体和单晶纳米棒的水热合成[J].人工晶体学报,2005(05):782-785. |
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