【摘要】 采用溶剂热还原方法,以FeCl3.6H2O和乙二醇为原料,采用双表面活性剂,在180℃条件下合成了粒径从72 nm到447 nm的纳米Fe3O4粒子,研究了NaAc.3H2O在体系中的作用,探讨了反应时间,铁源浓度和表面活性剂等反应条件对产物的影响.利用X射线粉末衍射(XRD),傅里叶变换红外光谱仪(FT-IR)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)和振动样品磁强计(VSM)对产物进行了分析和表征.结果表明NaAc.3H2O在反应中起着引导产物生成和分散剂的作用,Fe3O4粒径受反应时间,铁源浓度和表面活性剂的影响.合成的Fe3O4粒子显示出高的磁性能,在生物医药方面具有潜在的应用价值.更多还原

【Abstract】 Magnetic nanoparticles(Fe3O4) ranged from 72 to 447 nm were synthesized by the solvothermal method at 180 ℃ with FeCl3·6H2O and ethylene glycol as reactant and double surfactant.The influence of NaAc·3H2O and other factors were studied.The synthesized magnetic nanoparticles were investigated in detail by powder X-ray diffraction(XRD),FT-IR Spectromete(FT-IR),transmission electron microscope(TEM),scanning electron microscope(SEM) and vibrating sample magnetometer(VSM).The results indicate that NaAc·3H2O is guidance and dispersant,the size of Fe3O4 is influenced by reacting time,iron source concentration and the amount of surfactant.The synthesized Fe3O4 particles show excellent magnetic property,which makes them have potential values in bio-medicine.更多还原