The role of citrate precursors on the morphology of lanthanide oxides obtained by thermal decomposition

The role of citrate precursors on the morphology of lanthanide oxides obtained by thermal decomposition

Author Pinheiro da Silva, Mauro Francisco Google Scholar
Souza Carvalho, Flavio Machado de Google Scholar
Martins, Tereza da Silva Autor UNIFESP Google Scholar
Abreu Fantini, Marcia Carvalho de Google Scholar
Isolani, Paulo Celso Google Scholar
Institution Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Abstract Two series of lanthanide oxides with different morphologies were synthesized through calcinations of two types of citrate polymeric precursors. These oxides were characterized by XRD patterns, SEM electronic microscopy, and N(2) adsorption isotherms. SEM microscopy analysis showed that the calcination of crystalline fibrous precursors [Ln(2)(LH)(3)center dot 2H(2)O] (L = citrate) originated fibrous shaped particles. On the other hand, the calcination of irregular shaped particles of precursors [LnL center dot xH(2)O] originated irregular shaped particles of oxide, pointing out a morphological template effect of precursors on the formation of the respective oxides.
Keywords Lanthanide oxides
Oxide morphologies
Polymeric precursors
SEM analysis
Language English
Sponsor Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Grant number FAPESP: 05/02745-7
Date 2010-02-01
Published in Journal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 99, n. 2, p. 385-390, 2010.
ISSN 1388-6150 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 385-390
Origin http://dx.doi.org/10.1007/s10973-009-0380-1
Access rights Closed access
Type Article
Web of Science ID WOS:000275657600003
URI http://repositorio.unifesp.br/handle/11600/32212

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