Materials Research Bulletin, Vol.48, No.6, 2149-2153, 2013
Uniformly microsized luminescent materials obtained through a solid state reaction of WO3 with Ln(3+)-exchanged zeolite L at 700 degrees C
In this work, we report the uniformly microsized luminescent materials prepared by a solid state reaction of WO3 and Ln(3+)-exchanged zeolite L at 700 degrees C. The obtained materials were investigated by SEM, XRD and photoluminescence spectroscopy. The influence of tungstate-oxygen species on the morphology and luminescence of the materials were discussed in detail. Energy transfer from the tungstate-oxygen species to Eu3+ and Tb3+ ions have been demonstrated by the photoluminescence spectra, implying the loading of tungstate-oxygen species into the nanochannels of the crystals and the close proximity of which to Eu3+ ions. (C) 2013 Elsevier Ltd. All rights reserved.