Sonochemical synthesis of single-crystalline CeOHCO3 rods and their thermal conversion to CeO2 rods

Single-crystalline CeOHCO3 rods with an orthorhombic structure have been successfully synthesized by the sonochemical method from aqueous solution containing CeCl3 and urea. Polycrystalline CeO2 rods have been prepared by thermal conversion of single-crystalline CeOHCO3 rods at 500 degrees C in air. CeOHCO3 and CeO2 rods were characterized by x-ray powder diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and differential scanning calorimetric analysis (DSC).