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<title lang=en>One pot synthesis of hierarchical porous silica membrane material with dispersed Pt nanoparticles using a microwave-assisted sol–gel route</title>
<creator>Yacou, Christelle</creator>
<creator>Fontaine, Marie-Laure</creator>
<creator>Ayral, André</creator>
<creator>Lacroix-Desmazes, Patrick</creator>
<creator>Albouy, Pierre-Antoine</creator>
<creator>Julbe, Anne</creator>
<contributor>Institut Européen des membranes (IEM) ; Centre National de la Recherche Scientifique (CNRS) - Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM) - Université Montpellier 2 - Sciences et Techniques (UM2) - Université de Montpellier (UM)</contributor>
<contributor>Chimie des Matériaux - Connaissance et Valorisation (COVACHIMM) ; Université des Antilles et de la Guyane (UAG)</contributor>
<contributor>Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT) ; Institut National Polytechnique [Toulouse] (INP) - Université Paul Sabatier - Toulouse 3 (UPS) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM) ; Université Montpellier 1 (UM1) - Université Montpellier 2 - Sciences et Techniques (UM2) - Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Laboratoire de Physique des Solides (LPS) ; Université Paris-Sud - Paris 11 (UP11) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<description>International audience</description>
<source>ISSN: 0959-9428</source>
<source>EISSN: 1364-5501</source>
<source>Journal of Materials Chemistry</source>
<publisher>Royal Society of Chemistry</publisher>
<identifier>hal-01680586</identifier>
<identifier>https://hal.univ-antilles.fr/hal-01680586</identifier>
<source>https://hal.univ-antilles.fr/hal-01680586</source>
<source>Journal of Materials Chemistry, Royal Society of Chemistry, 2008, 18 (36), 〈10.1039/b807029f〉</source>
<identifier>DOI : 10.1039/b807029f</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1039/b807029f</relation>
<language>en</language>
<subject>[CHIM] Chemical Sciences</subject>
<subject>[SPI.MAT] Engineering Sciences [physics]/Materials</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>A versatile sol-gel route has been developed for the preparation of hierarchical porous silica membrane material with highly dispersed platinum nanoparticles (Pt-NPs). The outstanding feature of the "one pot" synthesis developed in this work lies in the successful preparation of a stable complex suspension made of silica sol, multi-scale porogens and Pt nanoparticles. The multi-scale porogens were based on non-ionic triblock copolymers and aqueous latex suspension to create mesopores and macropores, respectively, with finely tuned pore size and organization. For further functionalization of the membranes, Pt nanoparticles of about 4 nm in diameter were prepared by irradiating with microwaves (MW) the Pt precursors added in the starting suspension. This original path is suggested to enable a pre-organization of Pt nanoparticles in the ordered mesoporous structure. The suspensions were then deposited as thin films on either dense or macroporous supports, and further thermally treated at 450°C to remove the porogen units. Hierarchical porous layers composed of micropores (<2 nm), ordered mesopores (∼4 nm) and macropores (∼70 nm) with or without Pt were prepared and characterized. The resulting membranes are foreseen to exhibit great potential as multifunctional membranes for gas separation coupled with catalytic reaction. © The Royal Society of Chemistry 2008.</description>
<date>2008</date>
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