采用微波辅助溶剂热法制备了四氧化三铁(Fe3O4)纳米团簇.为了改善团簇的稳定性,用改进的St(o)ber法,在Fe3O4团簇的表面包覆—层氧化硅(SiO2),成功制备出核-壳结构的Fe3O4@SiO2粒子.用透射电镜(TEM)、X射线衍射仪(XRD)、纳米粒度仪、Zeta电位、振动样品磁强计(VSM)、MTT比色法等测试手段,对样品的形貌、结构、粒径分布、胶体稳定性、磁学性质及生物毒性进行了研究,结果表明:所制备的Fe3O4纳米团簇平均尺寸约为60nm,尺寸均匀,在室温下表现出超顺磁性.包覆后的核-壳结构Fe3O4@SiO2粒子平均尺寸约为150 rn,具有良好的水分散性和胶体稳定性,包覆前后的样品均具有低的生物毒性.
参考文献
| [1] | 李晓忆 .氧化铁纳米晶/纳米团簇的制备及其性能研究[D].烟台大学,2014. |
| [2] | 左洪波;张明福;韩杰才;刘俊明;曲伟;邢庆刚.α-Fe2O3/Fe3O4纳米复合材料的相变化及室温磁性质[J].哈尔滨理工大学学报,2005(4):36-40. |
| [3] | A.S. Lubbe;C. Bergemann.Physiological aspects in magnetic drug-targeting[J].Journal of Magnetism and Magnetic Materials,19991/3(1/3):149-155. |
| [4] | 赵原壁;邱祖民;黄佳英.磁性Fe3O4纳米粒子用作靶向药物载体的制备及分析[J].中国化学工程学报（英文版）,2008(3):451-455. |
| [5] | Gupta AK;Gupta M.Synthesis and surface engineering of iron oxide nanoparticles for biomedical applications[J].Biomaterials,200518(18):3995-4021. |
| [6] | H. L. Ding;S. Wang;Y. X. Zhang.Fe3O4@SiO2 Core/Shell Nanoparticles: The Silica Coating Regulations with a Single Core for Different Core Sizes and Shell Thicknesses[J].Chemistry of Materials: A Publication of the American Chemistry Society,201223(23):4572-4580. |
| [7] | Jining Gao;Xinze Ran;Chunmeng Shi.One-step solvothermal synthesis of highly water-soluble, negatively charged superparamagnetic Fe3O4 colloidal nanocrystal clusters[J].Nanoscale,201315(15):7026-7033. |
| [8] | Haibo Hu;Zhenghua Wang;Ling Pan.Ag-Coated Fe3O4@SiO2 Three-Ply Composite Microspheres: Synthesis, Characterization, and Application in Detecting Melamine with Their Surface-Enhanced Raman Scattering[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201017(17):7738-7742. |
| [9] | Yunhua Yang;Mingyuan Gao.Preparation of Fluorescent SiO_2 Particles with Single CdTe Nanocrystal Cores by the Reverse Microemulsion Method[J].Advanced Materials,200519(19):2354-2357. |
| [10] | Deng, Y.;Cai, Y.;Sun, Z.;Liu, J.;Liu, C.;Wei, J.;Li, W.;Liu, C.;Wang, Y.;Zhao, D..Multifunctional mesoporous composite microspheres with well-designed nanostructure: A highly integrated catalyst system[J].Journal of the American Chemical Society,201024(24):8466-8473. |
| [11] | Jianping Ge;Yadong Yin.Magnetically Tunable Colloidal Photonic Structures in Alkanol Solutions[J].Advanced Materials,200818(18):3485-3491. |
| [12] | Yi,P.;Chen,G.;Zhang,H.;Tian,F.;Tan,B.;Dai,J.;Wang,Q.;Deng,Z..Magnetic resonance imaging of Fe3O4@SiO2-labeled human mesenchymal stem cells in mice at 11.7 T[J].Biomaterials,201312(12):3010-3019. |
| [13] | Ling Li;Yang Yang;Jun Ding.Synthesis of Magnetite Nanooctahedra and Their Magnetic Field-Induced Two-/Three-Dimensional Superstructure[J].Chemistry of Materials: A Publication of the American Chemistry Society,201010(10):3183-3191. |
| [14] | 刘文宝;杨筱筱;柳瑞翠;张潇予;刘子全;姜付义.微波辅助溶剂热法制备纳米Fe3O4团簇[J].人工晶体学报,2015(4):1020-1024. |
| [15] | Hong Deng;Xiaolin Li;Qing Peng;Xun Wang;Jinping Chen;Yadong Li.Monodisperse Magnetic Single-Crystal Ferrite Microspheres[J].Angewandte Chemie,200518(18):2782-2785. |
| [16] | 王书宪 .超顺磁性Fe3O4纳米粒子的SiO2包覆及磁共振性能研究[D].青岛科技大学,2014. |
| [17] | 晁文彪;林伟坚;徐凯;张栋;戴玉荣;翟亚.单分散Fe3O4@nSiO2@mSiO2复合微球的制备及磁性的研究[J].化工时刊,2012(9):18-22. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%