The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight

BACKGROUND: Why are metal nanoparticles sol-gel entrapped in ORMOSIL so active and stable? In other words, why ORMOSIL-entrapped metal nanoparticles are more active and selective than many heterogenized counterparts, including silica-entrapped noble metals? RESULTS: Unveiling specific interactions b...

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Autores principales: Fidalgo, Alexandra, Ciriminna, Rosaria, Lopes, Luís, Pandarus, Valerica, Béland, François, Ilharco, Laura M, Pagliaro, Mario
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2013
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4105119/
https://www.ncbi.nlm.nih.gov/pubmed/24079552
http://dx.doi.org/10.1186/1752-153X-7-161
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author Fidalgo, Alexandra
Ciriminna, Rosaria
Lopes, Luís
Pandarus, Valerica
Béland, François
Ilharco, Laura M
Pagliaro, Mario
author_facet Fidalgo, Alexandra
Ciriminna, Rosaria
Lopes, Luís
Pandarus, Valerica
Béland, François
Ilharco, Laura M
Pagliaro, Mario
author_sort Fidalgo, Alexandra
collection PubMed
description BACKGROUND: Why are metal nanoparticles sol-gel entrapped in ORMOSIL so active and stable? In other words, why ORMOSIL-entrapped metal nanoparticles are more active and selective than many heterogenized counterparts, including silica-entrapped noble metals? RESULTS: Unveiling specific interactions between MNPs and the molecular structure of ORMOSIL, this work investigates subtle structural aspects through DRIFT spectroscopy. CONCLUSIONS: The results point to interactions between entrapped Pd and Pt nanocrystallites with the organosilica sol-gel cages similar to those taking place in enzymes.
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spelling pubmed-41051192014-07-31 The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight Fidalgo, Alexandra Ciriminna, Rosaria Lopes, Luís Pandarus, Valerica Béland, François Ilharco, Laura M Pagliaro, Mario Chem Cent J Research Article BACKGROUND: Why are metal nanoparticles sol-gel entrapped in ORMOSIL so active and stable? In other words, why ORMOSIL-entrapped metal nanoparticles are more active and selective than many heterogenized counterparts, including silica-entrapped noble metals? RESULTS: Unveiling specific interactions between MNPs and the molecular structure of ORMOSIL, this work investigates subtle structural aspects through DRIFT spectroscopy. CONCLUSIONS: The results point to interactions between entrapped Pd and Pt nanocrystallites with the organosilica sol-gel cages similar to those taking place in enzymes. BioMed Central 2013-09-30 /pmc/articles/PMC4105119/ /pubmed/24079552 http://dx.doi.org/10.1186/1752-153X-7-161 Text en Copyright © 2013 Fidalgo et al.; licensee Chemistry Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Fidalgo, Alexandra
Ciriminna, Rosaria
Lopes, Luís
Pandarus, Valerica
Béland, François
Ilharco, Laura M
Pagliaro, Mario
The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight
title The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight
title_full The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight
title_fullStr The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight
title_full_unstemmed The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight
title_short The sol-gel entrapment of noble metals in hybrid silicas: a molecular insight
title_sort sol-gel entrapment of noble metals in hybrid silicas: a molecular insight
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4105119/
https://www.ncbi.nlm.nih.gov/pubmed/24079552
http://dx.doi.org/10.1186/1752-153X-7-161
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