Hydrothermal Synthesis of Regular Octahedron Fe₃O₄Microcrystals

Abstract

Abstract Regular octahedron Fe3O4 microcrystals have been synthesized by a hydrothermal process on a large scale directly Fe substrates for the first time. X-ray diffraction (XRD) and scanning electron microscopy (SEM) have been used to investigate the novel fractal microcrystals. The results show that the regular octahedron Fe3O4 microcrystals can be obtained using this simple method. The size of microcrystals is evaluated to be from 2 to 20 μm. Moreover, one key fact has been found that the reaction temperature has a vital effect on the morphologies of the products. Keywords: Hydrothermal processoctahedron Fe3O4 microcrystalstemperature