Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase

[EN] Mesoporous silica–carbon composites functionalized with acidic oxygen groups were prepared by oxidation of a layer of carbon deposited inside the silica pores. The synthesis procedure involved the following steps: (a) removal of the silica surfactant, (b) impregnation of the silica pores with a...

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Detalles Bibliográficos
Autores: Valle Vigón, Patricia, Sevilla Solís, Marta, Fuertes Arias, Antonio Benito
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/91676
Acceso en línea:http://hdl.handle.net/10261/91676
Access Level:acceso abierto
Palabra clave:Mesoporous silica
Carbon
Composite
Oxidation
Adsorption
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spelling Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phaseValle Vigón, PatriciaSevilla Solís, MartaFuertes Arias, Antonio BenitoMesoporous silicaCarbonCompositeOxidationAdsorption[EN] Mesoporous silica–carbon composites functionalized with acidic oxygen groups were prepared by oxidation of a layer of carbon deposited inside the silica pores. The synthesis procedure involved the following steps: (a) removal of the silica surfactant, (b) impregnation of the silica pores with a carbon precursor, (c) carbonization and (d) oxidation with ammonium persulfate. The resulting silica–carbon composites contained around 25–30 wt.% of carbonaceous matter with a high density of acid oxygen groups attached to the deposited carbon layer (i.e. –COOH, –Cdouble bond; length as m-dashO and –OH). The structural characteristics of the parent silica were retained by the oxidized composite materials, which exhibit a high surface area, a large pore volume and a well-ordered porosity made up of uniform mesopores. The oxygen-functionalized silica–carbon composites were found to be excellent adsorbents of basic dyes (e.g. methylene blue) and heavy metals (i.e. Cu2+, Zn2+ and Pb2+) in aqueous media.This work was supported by the Spanish MICINN (Project CQT2011-24776). M.S. and P.V-V. acknowledge Ramon y Cajal and JAE-Predoc contracts, respectively.Peer reviewedElsevier201420142013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/91676reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.micromeso.2013.03.049info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/916762026-05-22T06:33:51Z
dc.title.none.fl_str_mv Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase
title Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase
spellingShingle Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase
Valle Vigón, Patricia
Mesoporous silica
Carbon
Composite
Oxidation
Adsorption
title_short Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase
title_full Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase
title_fullStr Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase
title_full_unstemmed Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase
title_sort Carboxyl-functionalized mesoporous silica–carbon composites as highly efficient adsorbents in liquid phase
dc.creator.none.fl_str_mv Valle Vigón, Patricia
Sevilla Solís, Marta
Fuertes Arias, Antonio Benito
author Valle Vigón, Patricia
author_facet Valle Vigón, Patricia
Sevilla Solís, Marta
Fuertes Arias, Antonio Benito
author_role author
author2 Sevilla Solís, Marta
Fuertes Arias, Antonio Benito
author2_role author
author
dc.subject.none.fl_str_mv Mesoporous silica
Carbon
Composite
Oxidation
Adsorption
topic Mesoporous silica
Carbon
Composite
Oxidation
Adsorption
description [EN] Mesoporous silica–carbon composites functionalized with acidic oxygen groups were prepared by oxidation of a layer of carbon deposited inside the silica pores. The synthesis procedure involved the following steps: (a) removal of the silica surfactant, (b) impregnation of the silica pores with a carbon precursor, (c) carbonization and (d) oxidation with ammonium persulfate. The resulting silica–carbon composites contained around 25–30 wt.% of carbonaceous matter with a high density of acid oxygen groups attached to the deposited carbon layer (i.e. –COOH, –Cdouble bond; length as m-dashO and –OH). The structural characteristics of the parent silica were retained by the oxidized composite materials, which exhibit a high surface area, a large pore volume and a well-ordered porosity made up of uniform mesopores. The oxygen-functionalized silica–carbon composites were found to be excellent adsorbents of basic dyes (e.g. methylene blue) and heavy metals (i.e. Cu2+, Zn2+ and Pb2+) in aqueous media.
publishDate 2013
dc.date.none.fl_str_mv 2013
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/91676
url http://hdl.handle.net/10261/91676
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.micromeso.2013.03.049
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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