Doped and Co-doped CeO2 : Preparation and properties

The glycine/nitrate method was modified and used to synthesise ceria solid solutions doped with rare earth cations and yttrium (Gd, Sm, Nd, Y) in the concentration range x = 0-0.25. The modification of the glycine nitrate process was performed by substituting a portion of Ce-nitrate with the less ex...

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Bibliographic Details
Published in:Ceramics international 2008-12, Vol.34 (8), p.2001-2006
Main Authors: BOSKOVIC, Snezana B, DJUROVIC, Dejan R, ZEC, Slavica P, MATOVIC, Branko Z, ZINKEVICH, Matvei, ALDINGER, Fritz
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Miscellaneous
Technical ceramics
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Summary:The glycine/nitrate method was modified and used to synthesise ceria solid solutions doped with rare earth cations and yttrium (Gd, Sm, Nd, Y) in the concentration range x = 0-0.25. The modification of the glycine nitrate process was performed by substituting a portion of Ce-nitrate with the less expensive Ce-acetate. Nanometric size powder particles were obtained. Powder properties such as specific surface area, crystallite and particle size, dopant content and lattice parameters were studied. The results showed that the dopants used in the concentration range formed solid solutions with host ceria. Defect models introducing anion vacancy radius can be used to calculate lattice parameters and theoretical densities of doped and four-fold co-doped ceria nanosized solid solutions. 17 refs.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2007.07.036