| Abstract: Porous flower-like Fe3O4 nanospheres were assembled by soft templating method using Ammonium Tartrate in ethanol solvent, and then Fe3O4 nanospheres with hollow size about 20nm were obtained by the N2 supercritical drying. SEM, TEM, XRD, BET and VSM techniques were adopted to characterize the spherical morphology, hollow structure, phase composition, specific surface area and magnetic properties of the final product, respectively. The possible formation mechanism of the porous flower-like Fe3O4 nanospheres was discussed. The results indicate that the as-obtained porous flower-like Fe3O4 nanospheres were pure, and the specific surface area was 168.61 m2·g-1, the saturation magnetization was 84.09 emu·g-1. |
