采用水热法制备出亚微尺寸Fe_3O_4空心球.用X射线衍射谱(XRD)和傅里叶红外光谱(FT-IR)表征了样品的相结构,用透射电子显微镜(TEM)和场发射扫描电子显微镜(FESEM)照片表征样品的形貌,表明在一定反应条件(反应温度、反应时间、反应试剂)下,反应产物可形成不同的形貌:针叶状的纳米颗粒、亚微尺寸的疏松球、实心球和空心球等.用振动样品磁强计(VSM)测量了样品的室温磁性,表明Fe_3O_4亚微空心球样品表现为铁磁性.
Fe_3O_4 submicrometer hollow spheres were prepared by a simple hydrothermal route,and characterized by X-ray powder diffraction(XRD)spectra,fourier transform-infrared(FTIR)spectra,transmission electron microscopy(TEM),field-emission scanning electron microscopy(FESEM)and vibrating sample magnetometer(VSM).FTIR and XRD results reveal the state of matter and crystal structure of the as-prepared Fe_3O_4 particles.TEM and FESEM images show that the products have different shapes when the reaction condition is different.Magnetic hysteresis loop indicates that the as-prepared Fe_3O_4hollow spheres exhibit a ferromagnetic behavior.
参考文献
| [1] | Caruso Frank .Hollow Capsule Processing through Colloidal Templating and Self-Assembly[J].Chemistry: A European journal,2000(3):413-419. |
| [2] | Caruso F;Caruso R A;Mhwald H .Nanoengineering of inorganic and hybrid hofiow spheres by colloidal templating[J].Science,1998,282:1111-1114. |
| [3] | Sgraja M;Belling J;Ktlmmel R et al.Inorganic and hybrid hollow spheres by coating of microcapsules as ternplates[J].Journal of Materials Science,2006,41(17):1573-4803. |
| [4] | Hartley T. Schmidt;Agnes E. Ostafin .Liposome Directed Growth of Calcium Phosphate Nanoshells[J].Advanced Materials,2002(7):532-535. |
| [5] | Paul V. Braun;Samuel I. Stupp .CdS MINERALIZATION OF HEXAGONAL, LAMELLAR, AND CUBIC LYOTROPIC LIQUID CRYSTALS[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,1999(3):463-469. |
| [6] | Liu T;Xie Y;Chu B .Use of Block Copolymer MiceUes on Formation of Hofiow MoO3 Nanospheres[J].Langmuir,2000,16(03):9015-9022. |
| [7] | Schacht S;Huo Q;Martin I G et al.Oil-Water Interface Templating of Mesoperous Macroseale Structures[J].Science,1996,273:768-771. |
| [8] | Silvano D;Krol S A;Diaspro A et al.Confocal laser scanning microscopy to study formation and properties of polyelectrolyte nanocapsules derived from CdCO_3 templates[J].Microscopy Research and Technique,2002,59(06):536-541. |
| [9] | Chen XY;Zhang ZJ;Li XX;Shi CW .Hollow magnetite spheres: Synthesis, characterization, and magnetic properties[J].Chemical Physics Letters,2006(1-3):294-298. |
| [10] | 闫共芹,官建国,王维.热解-还原法制备单分散Fe3O4亚微空心球[J].物理化学学报,2007(12):1958-1962. |
| [11] | Tong GX;Guan JG;Xiao ZD;Mou FZ;Wang W;Yan GQ .In situ generated H-2 bubble-engaged assembly: A one-step approach for shape-controlled growth of Fe nanostructures[J].Chemistry of Materials: A Publication of the American Chemistry Society,2008(10):3535-3539. |
| [12] | Youcun Chen;Yuanguang Zhang;Shengquan Fu .Synthesis and characterization of Co_3O_4 hollow spheres[J].Materials Letters,2007(3):701-705. |
| [13] | Jun Wang;Qianwang Chen;Chuan Zeng;Binyang Hou .Magnetic-Field-Induced Growth of Single-Crystalline Fe_3O_4 Nanowires[J].Advanced Materials,2004(2):137-140. |
| [14] | 张立德;牟季美.纳米材料和纳米结构[M].北京:科学出版社,2001 |
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