MnFe_2O_4@mSiO_2多功能磁性纳米复合材料的合成与应用研究  

Synthesis and application of MnFe_2O_4@mSiO_2 multifunctional magnetic nanocomposites

作　　者：陈浩 姜丽影 张鑫 赵耀[1] 郑博华 杨桂欣 CHEN Hao;JIANG Li-Ying;ZHANG Xin;ZHAO Yao;ZHENG Bo-Hua;YANG Gui-Xin(College of Chemical and Environmental Engineering,Harbin University of Science and Technologyy,Harbin 150040,China)

机构地区：[1]哈尔滨理工大学化学与环境工程学院,哈尔滨150040

出　　处：《黑龙江大学工程学报》2018年第2期52-58,共7页Journal of Engineering of Heilongjiang University

基　　金：黑龙江省大学生创新创业训练计划重点项目(8105/218160054);哈尔滨市科技局青年后备人才项目(4301/431030204)

摘　　要：采用高温热解法,使用低成本十八烯和油酸分别作为表面活性剂和溶剂制备分散性良好、尺寸均一、形貌均匀的MnFe_2O_4磁性纳米粒子。采用X射线衍射、透射电镜、N_2吸附/脱附测试等表征手段对材料的结构和功能进行表征。结果表明表面活性剂十八烯的非极性键长链对纳米粒子最终形貌、稳定性、聚集度和分散性起重要作用,且磁性纳米粒子的尺寸受反应的温度和时间影响。此外,磁性纳米粒子具有良好的生物相容性,在细胞相容性实验中细胞在高浓度的磁性纳米粒子溶液中仍保持80%以上的存活率,这表明所合成的磁性纳米粒子不仅粒径均一大小适中,而且具有一定的载药能力,生物毒性极低,所合成的纳米粒子各种性能以达到目标要求。Using high temperature pyrolysis method,low-cost oleic and oleic acid as surfactant and solvent preparation good dispersibility,MnFe2O4 homogeneous magnetic nanoparticles with the uniform size and morphology were synthesized. The structure and the characterization of the synthesized material were characterized by using Xray diffraction（ XRD）,transmission electron microscopy（ TEM）,N2 adsorption/desorption tests. Results shows that surfactants of oleic nonpolar bond long chain of plays an important role in nanoparticles morphology,degree of stability,aggregation and dispersion,at the same time,the size of the magnetic nanoparticles is influenced by reaction temperature and time. In addition, the magnetic nanoparticle has good biological compatibility,compatibility experiments in cells at a high concentration of magnetic nanoparticles in the solution remained in the survival rate of eighty percent above,which not only shows that the synthesis of magnetic nanoparticles size and uniform size,but also has a certain ability to take medicine,extremely low biological toxicity,and the synthesis of nano-particles wide range performance to achieve objectives.

关 键 词：磁性 纳米粒子 复合材料 核壳结构 

分 类 号：O63[理学—高分子化学]