PREPARATION METHOD OF METAL ION-DOPED CERIA USING SOLVOTHERMAL SYNTHESIS

摘要

The present invention relates to a method of preparing metal ion-doped ceria using solvothermal synthesis, the method comprising the steps of: (a) regulating the pH of a cerium acetate solution by adding an alkaline material thereto; (b) regulating the pH of a metal-ion precursor solution by adding an alkaline material thereto; and (c) after dispersing each solution obtained in steps (a) and (b) in a solvent, conducting a solvothermal reaction at 90-160℃ to form metal ion-doped ceria. According to the present invention, the metal ion-doped ceria having a high specific surface area and crystallinity can be economically synthesized via solvothermal synthesis at relatively lower temperatures (90-160℃) compared to conventional solvothermal synthesis temperatures, without surfactant or additional heat treatment, wherein, in particular, the specific surface area of the metal ion-doped ceria can be dramatically improved by using cerium acetate as a cerium precursor.