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Silica Monolith for the Removal of Pollutants from Gas and Aqueous Phases

This study focused on the application of mesoporous silica monoliths for the removal of organic pollutants. The physico-chemical textural and surface properties of the monoliths were investigated. The homogeneity of the textural properties along the entire length of the monoliths was assessed, as we...

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Autores principales: Miglio, Vanessa, Zaccone, Chiara, Vittoni, Chiara, Braschi, Ilaria, Buscaroli, Enrico, Golemme, Giovanni, Marchese, Leonardo, Bisio, Chiara
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7957575/
https://www.ncbi.nlm.nih.gov/pubmed/33804572
http://dx.doi.org/10.3390/molecules26051316
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author Miglio, Vanessa
Zaccone, Chiara
Vittoni, Chiara
Braschi, Ilaria
Buscaroli, Enrico
Golemme, Giovanni
Marchese, Leonardo
Bisio, Chiara
author_facet Miglio, Vanessa
Zaccone, Chiara
Vittoni, Chiara
Braschi, Ilaria
Buscaroli, Enrico
Golemme, Giovanni
Marchese, Leonardo
Bisio, Chiara
author_sort Miglio, Vanessa
collection PubMed
description This study focused on the application of mesoporous silica monoliths for the removal of organic pollutants. The physico-chemical textural and surface properties of the monoliths were investigated. The homogeneity of the textural properties along the entire length of the monoliths was assessed, as well as the reproducibility of the synthesis method. The adsorption properties of the monoliths for gaseous toluene, as a model of Volatile Organic Compounds (VOCs), were evaluated and compared to those of a reference meso-structured silica powder (MCM-41) of commercial origin. Silica monoliths adsorbed comparable amounts of toluene with respect to MCM-41, with better performances at low pressure. Finally, considering their potential application in water phase, the adsorption properties of monoliths toward Rhodamine B, selected as a model molecule of water soluble pollutants, were studied together with their stability in water. After 24 h of contact, the silica monoliths were able to adsorb up to the 70% of 1.5 × 10(−2) mM Rhodamine B in water solution.
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spelling pubmed-79575752021-03-16 Silica Monolith for the Removal of Pollutants from Gas and Aqueous Phases Miglio, Vanessa Zaccone, Chiara Vittoni, Chiara Braschi, Ilaria Buscaroli, Enrico Golemme, Giovanni Marchese, Leonardo Bisio, Chiara Molecules Article This study focused on the application of mesoporous silica monoliths for the removal of organic pollutants. The physico-chemical textural and surface properties of the monoliths were investigated. The homogeneity of the textural properties along the entire length of the monoliths was assessed, as well as the reproducibility of the synthesis method. The adsorption properties of the monoliths for gaseous toluene, as a model of Volatile Organic Compounds (VOCs), were evaluated and compared to those of a reference meso-structured silica powder (MCM-41) of commercial origin. Silica monoliths adsorbed comparable amounts of toluene with respect to MCM-41, with better performances at low pressure. Finally, considering their potential application in water phase, the adsorption properties of monoliths toward Rhodamine B, selected as a model molecule of water soluble pollutants, were studied together with their stability in water. After 24 h of contact, the silica monoliths were able to adsorb up to the 70% of 1.5 × 10(−2) mM Rhodamine B in water solution. MDPI 2021-03-01 /pmc/articles/PMC7957575/ /pubmed/33804572 http://dx.doi.org/10.3390/molecules26051316 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Miglio, Vanessa
Zaccone, Chiara
Vittoni, Chiara
Braschi, Ilaria
Buscaroli, Enrico
Golemme, Giovanni
Marchese, Leonardo
Bisio, Chiara
Silica Monolith for the Removal of Pollutants from Gas and Aqueous Phases
title Silica Monolith for the Removal of Pollutants from Gas and Aqueous Phases
title_full Silica Monolith for the Removal of Pollutants from Gas and Aqueous Phases
title_fullStr Silica Monolith for the Removal of Pollutants from Gas and Aqueous Phases
title_full_unstemmed Silica Monolith for the Removal of Pollutants from Gas and Aqueous Phases
title_short Silica Monolith for the Removal of Pollutants from Gas and Aqueous Phases
title_sort silica monolith for the removal of pollutants from gas and aqueous phases
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7957575/
https://www.ncbi.nlm.nih.gov/pubmed/33804572
http://dx.doi.org/10.3390/molecules26051316
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