Fernández Castillo, JesúsIsasi Marín, JosefaPérez Estébanez, MartaAldama, IvánArévalo, PabloDíaz-Guerra Viejo, Carlos2024-02-082024-02-082011Castillo, 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.2011.05.016.0022-231310.1016/j.jlumin.2011.05.016https://hdl.handle.net/20.500.14352/100531Nanopowders 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.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal articlehttps://doi.org/10.1016/j.jlumin.2011.05.016restricted access54Química23 Química