Fabrication and Characterization of Magnetic Fe3O4/α-Fe2O3 Heterogeneous Nanorods

Magnetic Fe3O4/alpha-Fe2O3 heterogeneous nanorods were successfully prepared via calcination reduction process using glucose as reductant, and they were characterized by SEM, TEM, XRD and VSM techniques. The influences of additive concentration, solution volume, reaction temperature and reaction time on morphology and the properties of Fe3O4/alpha-Fe2O3 heterogeneous nanorods were investigated. Firstly, alpha-Fe2O3 nanorods were prepared by the hydrothermal approach, and the FeCl3 concentration of 20 mM, the NH4H2PO4 concentration of 0.96 mM, the hydrothermal volume of 60 mL, the hydrothermal temperature of 180 degrees C, and hydrothermal time of 12 h were selected as the optimum conditions. Secondly, magnetic Fe3O4/alpha-Fe2O3 heterogeneous nanorods calcined at 600 degrees C for 3 h with the mass ratio of 1:20 for alpha-Fe2O3 nanorods and glucose were constructed with largest saturation magnetization of 78.2 emu/g, their average length and average diameter were about 215.0 nm and 79.2 nm, respectively.