Synthesis of ZrO 2–15 mol% CeO 2 nanopowders by a pH-controlled nitrate–glycine process

The synthesis of nanocrystalline ZrO 2–15 mol% CeO 2 powders by a pH-controlled nitrate–glycine gel-combustion process was investigated. It was found that the metastable tetragonal phase could be fully retained probably due to the small crystallite size of the powders (5–8 nm). The effect of the gly...

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Published inMaterials letters Vol. 58; no. 20; pp. 2456 - 2460
Main Authors Lascalea, G.E, Lamas, D.G, Pérez, L, Cabanillas, E.D, Walsöe de Reca, N.E
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2004
Subjects
Ceramics
Gel-combustion
Glycine–nitrate process
Nanomaterials
Tetragonal zirconia polycrystals
Zirconia–ceria
ZrO 2–CeO 2
ZrO 2–CeO 2
Zirconia–ceria
Gel-combustion
Tetragonal zirconia polycrystals
Glycine–nitrate process
Nanomaterials
Ceramics
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Summary:The synthesis of nanocrystalline ZrO 2–15 mol% CeO 2 powders by a pH-controlled nitrate–glycine gel-combustion process was investigated. It was found that the metastable tetragonal phase could be fully retained probably due to the small crystallite size of the powders (5–8 nm). The effect of the glycine content and calcination temperature on powder morphology was studied. The highest specific surface area was obtained for 5 mol of glycine per mole of metal cations and a calcination temperature of 350 °C, which was of (93±2) m 2/g. Lower values of the specific surface area were found for smaller glycine/metal ratios or higher calcination temperatures.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2004.02.036