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Sol-gel synthesis and washing of amorphous g-FeO(OH) xerogels
(Wiley-v C H Verlag GmbhWeinheimAlemanha, 2012)
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)
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 ...
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 ...
Structural features of phosphate and sulfate modified zirconia prepared by sol-gel route
(Springer, 2004-10-01)
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)
SnO2:Eu nanocrystallites in SnO2 monolithic xerogels
(1992-02-28)
By simple room temperature broad band time-resolved spectroscopy it was possible to discriminate different Eu3+ spectra in SnO2 monolithic gels obtained by a sol-gel synthetic route. Nanocrystalline domains of the ...
Preparation, characterization and catalytic studies of V2O5-SiO2 xerogel composite
(SPRINGER, 2008)
In this work, we report the synthesis, characterization and catalytic properties of a vanadium oxide-silicon oxide composite xerogel prepared by a soft chemistry approach. In order to obtain such material, we submitted a ...
Isothermal structural evolution of SnO2 monolithic porous xerogels
(Munksgaard Int Publ Ltd, 1997-10-01)
Monolithic samples of SnO2 xerogel were produced by careful control of the gelation and drying steps of material preparation. In these samples, small and nanoporous aggregates stick together, yielding a monolithic (nonpowdered) ...
Porosity evolution in SnO2 xerogels during sintering under isothermal conditions
(1995-01-01)
The structural evolution during isothermal sintering (200≤T≤600 °C) of SnO2 xerogels was studied by small-angle x-ray scattering (SAXS) using synchrotron radiation. The SAXS intensity and, consequently, the structure ...