Preparation and Characterization of Nanometer Ceria Powder by Electrochemical Synthesis Method in a Single and Double Chamber Cells

doi:10.3724/SP.J.1077.2008.00087

Abstract

Abstract: CeCl₃, Ce(NO₃)₃ and CeCl₃-KI solutions were respectively electrolyzed at a constant current density in a single chamber cell or a double chamber cell, consequently, CeO₂ powders were produced. After they were calcined at high temperature, the size and structure of ceria were analyzed by means of TEM and XRD. The reasons of size difference of CeO₂ powders prepared in the single chamber cell or the double chamber cell were analyzed. The CeO₂ synthesis mechanisms of electrolizing all the cerium (Ⅲ)-salt solution systems were also discussed in details. The results show that the nanometer scale powders are cubic crystal group in structure and spherical in shape, and the sizes of samples prepared in the single chamber cell are 20-50nm, 30-50nm and 20-100nm, respectively. The size (7-20nm) of CeO₂ powders prepared by electrolizing CeCl₃ solution in the double chamber cell with an anion-exchange membrane is smaller than that prepared in the single chamber cell.

Key words: electrochemical synthesis, CeO₂, single and double chamber cell, mechanism study, nanometer

CLC Number:

TB383

WANG Tao,SUN Du-Cheng. Preparation and Characterization of Nanometer Ceria Powder by Electrochemical Synthesis Method in a Single and Double Chamber Cells[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2008.00087.

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