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

Autor(es)

Pinheiro da Silva, Mauro Francisco ^[1] ; de Souza Carvalho, Flavio Machado ^[2] ; Martins, Tereza da Silva ^[3] ; de Abreu Fantini, Marcia Carvalho ^[4] ; Isolani, Paulo Celso ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Geociencias, BR-05513970 Sao Paulo - Brazil

^[3] Univ Fed Sao Paulo, Dept Ciencias Exatas & Terra, Sao Paulo - Brazil

^[4] Univ Sao Paulo, Dept Fis Aplicada, Inst Fis, BR-05513970 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY; v. 99, n. 2, p. 385-390, FEB 2010.
• Citações Web of Science: 19

Resumo

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. (AU)

• Processo FAPESP: 05/02745-7 - Tratamento de compostos organicos poluentes empregando-se ferro de valencia zero.
• Beneficiário: Renato Sanches Freire
• Modalidade de apoio: Auxílio à Pesquisa - Regular