Now showing items 61-70 of 321
Sol-gel synthesis and washing of amorphous g-FeO(OH) xerogels
(Wiley-v C H Verlag GmbhWeinheimAlemanha, 2012)
White light emission of Eu3+-based hybrid xerogels
The luminescence spectra and extended x-ray-absorption fine-structure (EXAFS) measurements of a series of Eu3+-based organic/inorganic xerogels were reported and related to the local coordination of the lanthanide cations. ...
3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octanechloride/silica hybrid polymer. A morphologic study in relation to the organic content
(Elsevier Sci LtdOxfordInglaterra, 2003)
Nanostructured TiO2-based composites for light absorption
(Trans Tech Publications Ltd, 2014-01-01)
Metal oxidenanocomposites were prepared by two different routes: polyol and sol-gel. Characterization by X ray diffraction showed that the first processproducesdirectly a two-phase material, while the sol-gelpowder never ...
Erbium- and ytterbium-doped sol-gel SiO2-HfO2 crack-free thick films onto silica on silicon substrate
(Elsevier B.V., 2006-09-15)
Aware of the difficulties in applying sol-gel technology on the preparation of thin films suitable for optical devices, the present paper reports on the preparation of crack-free erbium- and ytterbium-doped silica: hafnia ...
Effect of the surfactant nature on the thermo-stability of surface modified SnO2 nanoparticles
(Elsevier B.V., 2008-11-01)
The modification of particle surface properties by the addition of small surfactant molecules in the initial sol is one strategy to minimize the strong tendency to aggregation and coarsening of nanoparticles; prepared from ...
Structural features of phosphate and sulfate modified zirconia prepared by sol-gel route
This paper describes the effect of sulfate, phosphate and nitrate complexing ligands on the structural features of amorphous xerogels and on the crystallization of metastable zirconia phases during the xerogel-ceramic ...
Mapeo estructural de sílica xerogel utilizando espectroscopía infrarroja
(Revista Mexicana de Física, 2009)