Fotoluminescência e adsorção de CO2 em nanopartículas de CaTiO3 dopadas com lantânio


Autoria(s): Gonçalves,Rosana F.; Carreño,Neftalí L. V.; Escote,Márcia Tsuyama; Lopes,Kírian Pimenta; Valentini,Antoninho; Leite,Edson R.; Longo,Elson; Machado,Marco A.
Data(s)

01/12/2004

Resumo

Ca1-xLa xTiO3 powders were prepared by the polymeric precursor method. X-ray diffraction (XRD), FT-Raman spectroscopy, transmission electron microscopy (TEM), and N2 and CO2 adsorption were used for the microstructural and surface characterization of the powders. Room temperature photoluminescence (PL) was observed in Ca1-xLa xTiO3 amorphous particles. The PL intensity of these powders was found to be dependent on the lanthanum molar concentration.

Formato

text/html

Identificador

http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000600004

Idioma(s)

pt

Publicador

Sociedade Brasileira de Química

Fonte

Química Nova v.27 n.6 2004

Palavras-Chave #CaTiO3 #lanthanum #photoluminescence #CO2 adsorption
Tipo

journal article