RT Journal Article
T1 Structural and cathodoluminiscent properties of Zr0.95Ce0.05O2 nanopowders prepared by sol–gel and template methods
A1 Fernández Castillo, Jesús
A1 Isasi Marín, Josefa
A1 Pérez Estébanez, Marta
A1 Aldama, Iván
A1 Arévalo, Pablo
A1 Díaz-Guerra Viejo, Carlos
AB Nanopowders of Zr0.95Ce0.05O2 composition have been prepared by a standard Pechini-type sol–gel process and by means of a colloidal crystal template approach. In the latter method, inverse opal Zr0.95Ce0.05O2 powders were fabricated employing poly(methylmethacrylate) (PMMA) colloidal crystals as a template.The effects of the two different synthesis routes on the structure and microstructural characteristics of the prepared nanopowders were evaluated by X-ray diffraction and scanning electron microscopy. For both preparation routes, the X-ray diffraction analysis has shown that a tetragonal fluorite structure is formed with a crystallite size of 35–40 nm. The scanning electron microscopy measurements indicate that the powder obtained by the sol–gel Pechini-type process is comprised of nanoparticles that are arranged in agglomerates with shape and size relatively uniform whereas the inverse opal Zr0.95Ce0.05O2 nanopowders exhibit the formation of macropores with a mean size of  100 nm. The cathodoluminescence spectra of the prepared Zr0.95Ce0.05O2 nanomaterials have been measured in the 300–800 nm wavelength range. The powder prepared by sol–gel method yields a broad emission band centered at 482nm whereas the emission from the inverse opal preparation is considerably less intense.
PB Elsevier
SN 0022-2313
YR 2011
FD 2011
LK https://hdl.handle.net/20.500.14352/100531
UL https://hdl.handle.net/20.500.14352/100531
LA eng
NO Castillo, J. F., et al. «Structural and Cathodoluminiscent Properties of Zr0.95Ce0.05O2 Nanopowders Prepared by Sol–Gel and Template Methods». Journal of Luminescence, vol. 131, n.o 10, octubre de 2011, pp. 2128-32. https://doi.org/10.1016/j.jlumin.2011.05.016.
NO Universidad Complutense de Madrid
NO Ministerio de Ciencia, Innovación y Universidades (España)
DS Docta Complutense
RD 9 abr 2025