Optimisation of the surface properties of SBA-15 mesoporous silica for in-situ nanoparticle synthesis
Idioma
en
Article de revue
Este ítem está publicado en
Microporous and Mesoporous Materials. 2009, vol. 120, n° 1-2, p. 2-6
Elsevier
Resumen en inglés
Various methods proposed for preparing nanoparticles within porous matrices involve generally the impregnation of the matrix with a solution of precursors followed by reduction based on chemical, thermal, radiolytic, or ...Leer más >
Various methods proposed for preparing nanoparticles within porous matrices involve generally the impregnation of the matrix with a solution of precursors followed by reduction based on chemical, thermal, radiolytic, or photochemical process. In most cases, the amount of solution impregnated is small and not uniformly distributed in the matrix, with a yield less than 30% and concentrated around the matrix surface. We have developed a novel method for preparing composite materials, combining impregnation under partial vacuum with radiolytic reduction. This method has enabled us to obtain SBA-15 mesoporous silicas with 50–70% impregnation and to control the nanoparticle size.< Leer menos
Palabras clave en inglés
TEM
Mesoporous silica
Bismuth nanoparticles
Radiolysis
XPS
Orígen
Importado de HalCentros de investigación