Influence of Synthesis Method on the Morphology and Properties of ABO3 Materials

摘要

Materials of potassium niobate (KNbO3) with orthorhombic structure were successfully synthesized using two methods: solvothermal at 220 °C for 12 hours and sol-gel technique at 140 °C for 4h; both obtained samples were heat treated at 600 °C for 4 hours, and the influence of the synthesis methods on their properties was studied. KNbO3 materials were prepared using stoichiometric amounts of NbCl5, KOH as reactants and 1,2 propanediol as reaction medium. The structure and morphology of the KNbO3 powders were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDAX), Fourier transform infrared (FTIR) and Raman spectroscopy.