Hydrothermal Synthesis and Ionic Conduction Properties of Ce1-x M'xCa0.2 O1.8-0.4x(M=Y, La and Gd)

Abstract

Abstract: Aseries of lanthanide co doped ceria solid solution, Ce_1-x M'_x Ca_0.2 O_{1.8-0.4 x} (M=Y, La and Gd) has been prepared by mild hydrothermal method at 240 ℃ for less than 24h. The doping effect of lanthanide on the conduction properties was investigated. It is found that the conductivity increased from Y, Gd to La, whereas the activation energy changed in a reverse trend. It is also found that the mean particle size decreases from Y, Gd to La, they are 32 nm, 20 nm and 15 nm, respectively. All these results can be contributed to the size similarity of Y ³⁺ and Ce ⁴⁺.

Key words: Hydrothermal synthesis, Co doping ceria solid solution, Nano size particle, Ionic conduction.

CLC Number:

O611.4

TrendMD:

ZHAO Hui, ZHU Xiang-Rong, LIU Shuang-Long, HAN Dong-Lin, XU Wei, FENG Shou-Hua . Hydrothermal Synthesis and Ionic Conduction Properties of Ce_1-x M'_xCa_0.2 O_1.8-0.4x(M=Y, La and Gd)[J]. Chem. J. Chinese Universities, 2001, 22(9): 1441.

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Hydrothermal Synthesis and Ionic Conduction Properties of Ce_1-x M'_xCa_0.2 O_1.8-0.4x(M=Y, La and Gd)

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