【摘要】 采用了两步法制备柠檬酸改性纳米Fe3O4磁性颗粒。对样品进行了傅立叶红外光谱(FTIR)、Zeta电位分析、透射电镜(TEM)、热重分析(TG)和磁化曲线测定等表征分析,并对柠檬酸吸附特性进行了研究。所得柠檬酸改性Fe3O4纳米颗粒粒径约为30 nm,磁性颗粒饱和磁化强度可达38.9 emμ/g,可用于药物载体研究。更多还原

【Abstract】 A magnetic nanoparticles modified with citric acid was prepared by means of the two-steps co-precipitation method.The absorption properties of samples were investigated by TEM,FTIR,TG,zeta potential and vibration magnetometer.The average grain size of citric-acid-modified magnetite cores is about 30 nm and the saturation magnetization is 38.9 emμ/g,respectively.The result shows that the maghetic nanoparticle can be used as a medical carrier of biomedical.更多还原