Synthesis and characterization of cerium dioxide fibers

被引：11

作者：

Yu, Je-Yan ^{[1
]}

Wei, Wen-Cheng J. ^{[1
]}

Lin, Sung-En ^{[1
]}

Sung, Jia-Ming ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 118卷 / 2-3期

关键词：

Ceramics; Chemical synthesis; TGA; TEM; Phase transitions;

D O I：

10.1016/j.matchemphys.2009.08.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fibrous ceria, which is an important ionic material used for solid electrolyte, has been synthesized a new chemical co-precipitation/ripening method. Aqueous nitrate solutions containing NaOH/C6H8 are used to grow various Gd- and Sm-doped CeO2 fibers. The growth mechanism and microstructure properties of the fibers are investigated. Other than fibers, three precipitates either in the forms spherical colloids, flaky, or stick-in-bundle morphologies have also been obtained by similar precursor solutions. The morphologies of those precipitates are greatly affected by the concentration ratio the Ce(NO3)(3)/NaOH/C6H8O7. The fibrous feature is retained by calcination at a temperature up to 1200 in 1h. Reaction kinetics and the chemical composition changes of the fibers are reported. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：410 / 416

页数：7

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