Preparation of monodispersed cerium(IV) oxide particles by thermal hydrolysis: influence of the presence of urea and Gd doping on their morphology and growth
作者： Masanori Hirano , Michio Inagaki
DOI: 10.1039/A907510K
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摘要: Monodispersed cerium(IV) oxide (CeO2) particles composed of an agglomeration primary nanocrystalline with a cubic fluorite structure could be synthesized from relatively concentrated sulfate solutions up to 0.5 mol dm−3 by thermal hydrolysis at 120 240 °C. The influences the presence urea and its concentration on their crystallite size morphology were investigated. Upon addition increasing concentration, gradually changed monodispersed dispersed ultra-fine that had no definite shape tight agglomeration. mechanisms for growth formed discussed. existence dopant such as Gd was effective suppressing grain ceria during calcining sintering.
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sci-hub.se 参考文章(19)
M. Hirano, E. Kato, Hydrothermal Synthesis of Two Types of Cerium Carbonate Particles Journal of Materials Science Letters. ,vol. 18, pp. 403- 405 ,(1999) , 10.1023/A:1006653305821
Egon Matijević, Wan Peter Hsu, Preparation and properties of monodispersed colloidal particles of lanthanide compounds Journal of Colloid and Interface Science. ,vol. 118, pp. 506- 523 ,(1987) , 10.1016/0021-9797(87)90486-3
Singo Nakane, Toshiaki Tachi, Masaru Yoshinaka, Ken Hirota, Osamu Yamaguchi, Characterization and Sintering of Reactive Cerium(IV) Oxide Powders Prepared by the Hydrazine Method Journal of the American Ceramic Society. ,vol. 80, pp. 3221- 3224 ,(2005) , 10.1111/J.1151-2916.1997.TB03255.X
Hidenori Yahiro, Yoshinobu Baba, Koichi Eguchi, Hiromichi Arai, High Temperature Fuel Cell with Ceria‐Yttria Solid Electrolyte Journal of The Electrochemical Society. ,vol. 135, pp. 2077- 2080 ,(1988) , 10.1149/1.2096212
P. Fornasiero, G. Balducci, R. Di Monte, J. Kašpar, V. Sergo, G. Gubitosa, A. Ferrero, M. Graziani, Modification of the Redox Behaviour of CeO2Induced by Structural Doping with ZrO2 Journal of Catalysis. ,vol. 164, pp. 173- 183 ,(1996) , 10.1006/JCAT.1996.0373
Masanori Hirano, Etsuro Kato, Hydrothermal Synthesis of Nanocrystalline Cerium(IV) Oxide Powders Journal of the American Ceramic Society. ,vol. 82, pp. 786- 788 ,(2004) , 10.1111/J.1151-2916.1999.TB01838.X
Jan Herle, Teruhisa Horita, Tatsuya Kawada, Natsuko Sakai, Harumi Yokokawa, Masayuki Dokiya, Fabrication and sintering of fine yttria-doped ceria powder Journal of the American Ceramic Society. ,vol. 80, pp. 933- 940 ,(2005) , 10.1111/J.1151-2916.1997.TB02924.X
Pei-Lin Chen, I-Wei Chen, Sintering of Fine Oxide Powders: I, Microstructural Evolution Journal of the American Ceramic Society. ,vol. 79, pp. 3129- 3141 ,(1996) , 10.1111/J.1151-2916.1996.TB08087.X
Masanori Hirano, Shinzi Watanabe, Etsuro Kato, Yasunobu Mizutani, Masayuki Kawai, Yasuhisa Nakamura, Fabrication, electrical conductivity and mechanical properties of Sc2O3-doped tetragonal zirconia ceramics Solid State Ionics. ,vol. 111, pp. 161- 169 ,(1998) , 10.1016/S0167-2738(98)00185-4
Masanori Hirano, Etsuro Kato, The hydrothermal synthesis of ultrafine cenum(w) oxide powders Journal of Materials Science Letters. ,vol. 15, pp. 1249- 1250 ,(1996) , 10.1007/BF00274391