Sonochemical synthesis of single-crystalline CeOHCO_3 rods and their thermal conversion to CeO_2 rods

摘要

Single-crystalline CeOHCO_3 rods with an orthorhombic structure have been successfully synthesized by the sonochemical method from aqueous solution containing CeCl_3 and urea. Polycrystalline CeO_2 rods have been prepared by thermal conversion of single-crystalline CeOHCO_3 rods at 500 deg C in air. CeOHCO_3 and CeO_2 rods were characterized by x-ray powder diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and differential scanning calorimetric analysis (DSC).