空气氧化法制备正八面体纳米Fe3O4

In this paper, octahedral magnetic nanoparticles have been prepared by precipitation from partially oxidated Fe2+ using air as natural oxidant, which are superparamagnetic and have high stablity in the air. The product was characterized by means of Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and. superconductivity quantum Interference device. The results show that, the morphology is octahedron, and the average edge length of Fe3O4 is about 30nm, in addition, it is superparamagnetic in the room temperature and the saturation magnetization is 75emμ/g .