Química Nova (Jan 2004)

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

  • Gonçalves Rosana F.,
  • Carreño Neftalí L. V.,
  • Escote Márcia Tsuyama,
  • Lopes Kírian Pimenta,
  • Valentini Antoninho,
  • Leite Edson R.,
  • Longo Elson,
  • Machado Marco A.

Journal volume & issue
Vol. 27, no. 6
pp. 862 – 865

Abstract

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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.

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