α-Fe2O3中空磁性纳米纤维的制备研究

摘要

磁性铁氧化物纳米材料是近几十年发展起来的一种具有磁靶向性的纳米材料。其中磁性纳米纤维由于具有独特的形状各向异性和磁晶各向异性，可以突破各向同性的磁性粉体材料对电磁性能的限制而引起研究者的广泛关注。通过静电纺丝、水热合成以及高温煅烧相结合的方法成功制备了新型 Fe2 O 3中空磁性纳米纤维。采用扫描电子显微镜(SEM)、红外光谱分析仪(FT-IR)、差热扫描量热仪(DSC)、热重分析仪(TG)及 X 射线衍射仪(XRD)对煅烧产物进行测试表征，结果表明煅烧产生的磁性纳米纤维非织造布具有新颖的中空结构，对甲基橙有快速吸附。%In recent decades,magnetic iron oxide material has developed into a kind of nanomaterial with the property of magnetic targeting.Magnetic nanoscale fibers have aroused extensive concern of researchers because of the unique shape anisotropy and magnetocrystalline anisotropy which can break through the isotropic magnet-ic powder materials on the properties of electromagnetic limit.Electrospinning,hydrothermal synthesis and high-temperature calcination were combined successfully to prepare novel magnetic nanofibers.Scanning elec-tron microscopy (SEM),fourier transform infrared spectroscopy (FT-IR),thermal gravimetric analysis (TG) and X-ray diffraction (XRD)were employed to test and represent the calcination.The results indicated that the magnetic nanofiber after calcination has a novel structure of the hollow porous microstructure which shows quick and effective adsorption of methyl orange.