Fe_(3)O_(4)@SiO_(2)/rGO复合材料的制备及性能  

Preparation and properties of Fe_(3)O_(4)@SiO_(2)/rGO composites

作　　者：刘海丰 高波 尹俊太 Liu Haifeng;Gao Bo;Yin Juntai(School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,沈阳110819

出　　处：《材料与冶金学报》2023年第5期444-448,455,共6页Journal of Materials and Metallurgy

基　　金：辽宁省科学技术基金项目(XLYC1902105)。

摘　　要：采用溶剂热法制备出具有超顺磁性、高饱和磁化强度的Fe_(3)O_(4)纳米颗粒,并在其表面包覆SiO_(2)形成Fe_(3)O_(4)@SiO_(2)复合材料,再用水热法与氧化石墨烯(GO)复合制得Fe_(3)O_(4)@SiO_(2)/rGO复合材料.使用扫描电子显微镜(SEM)、振动样品磁强计(VSM)等仪器对复合材料进行结构和性能表征.结果表明:Fe_(3)O_(4)@SiO_(2)/rGO复合材料具有优异的超顺磁性、分散性和稳定性,饱和磁化强度达到33.97 emu/g;Fe_(3)O_(4)@SiO_(2)/rGO复合材料作为一种载药性能良好的靶向载体材料,在盐酸表柔比星(EPI)药物质量浓度为25μg/mL的条件下,加载能力可达到34.95%.Fe_(3)O_(4) nanoparticles with superparamagnetism and high saturation magnetization were prepared by solvothermal method and then were encapsulated by the silica to form composite material(Fe_(3)O_(4)@SiO_(2)).Fe_(3)O_(4)@SiO_(2)/rGO was prepared by hydrothermal method combining Fe_(3)O_(4)@SiO_(2) with GO.The structure and properties of the composite were characterized by scanning electron microscope(SEM),vibrating sample magnetometer(VSM),etc.The results showed that the surface modified Fe_(3)O_(4)@SiO_(2)/rGO composites had excellent superparamagnetism,dispersion,and stability,with saturation magnetization of 3397 emu/g.Fe_(3)O_(4)@SiO_(2)/rGO composite was a targeted carrier material with good drug loading performance,with loading capacity up to 3495%at 25μg/mL of EPI.

关 键 词：石墨烯 超顺磁性 载体材料 

分 类 号：TB383[一般工业技术—材料科学与工程]