Title
Optimisation of the surface properties of SBA-15 mesoporous silica for in-situ nanoparticle synthesis Optimisation of the surface properties of SBA-15 mesoporous silica for in-situ nanoparticle synthesis
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Amsterdam ,
Subject
Chemistry
Source (journal)
Microporous and mesoporous materials: zeolites, clays, carbons and related materials. - Amsterdam
Volume/pages
120(2009) :1/2 , p. 2-6
ISSN
1387-1811
ISI
000264619200002
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
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 5070% impregnation and to control the nanoparticle size.
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