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.
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, 2008
, 23(1)
: 87
-92
.
DOI: 10.3724/SP.J.1077.2008.00087
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