Highly mesoporous carbons obtained using a dynamic template method

New nanoporous carbons with extremely high mesopore volumes and surface areas were obtained using mesoporous silica with a 3-D wormhole porous framework as templates. Mesoporous silica was synthesized following the literature described methods. Polystyrene sulfonic acid-based organic salts were used...

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Detalles Bibliográficos
Autores: Bandosz, Teresa J., Ovín Ania, María Concepción
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2006
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/98841
Acceso en línea:http://hdl.handle.net/10261/98841
Access Level:acceso abierto
Palabra clave:Carbon
Dynamic template carbonization
Silica
Mesoporosity
Sodium effect
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spelling Highly mesoporous carbons obtained using a dynamic template methodBandosz, Teresa J.Ovín Ania, María ConcepciónCarbonDynamic template carbonizationSilicaMesoporositySodium effectNew nanoporous carbons with extremely high mesopore volumes and surface areas were obtained using mesoporous silica with a 3-D wormhole porous framework as templates. Mesoporous silica was synthesized following the literature described methods. Polystyrene sulfonic acid-based organic salts were used as carbon precursors. To evaluate the effect of sodium on porosity development silica matrices with various thicknesses of pore walls were synthesized. Prior to carbonization, in order to increase surface heterogeneity, the precursor chemistry was modified by cation exchange with catalytically active metals (i.e., copper, nickel, cobalt). Carbonization followed by HF etching of silica templates generated mesoporous carbons with large surface areas and high pore volumes, which is accompanied by high dispersion of catalytically active metals on the carbon surface. Sodium present in the carbonaceous precursor causes in the dynamic template effect via its reactions with a silica matrix during carbonization. This, along with reactive gases evolved during heating lead to the expansion of the carbonaceous structure, and thus to the unique wide mesopore size distributions of the templated carbons with pore sizes between 10 and 50 nm and their volume exceeding 2.5 cm3 g−1.The financial support for this research, provided by FICYT and PSC CUNY (PSC CUNY 66382-0035) is gratefully acknowledged. We thank Dr. Pis and Dr. Beguin for kindly providing SEM and XRD, and TEM, respectively. Thomas Cacciaguerra is also acknowledged for assistance in TEM analysis.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201420142006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/98841reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.micromeso.2005.10.034Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/988412026-05-22T06:33:51Z
dc.title.none.fl_str_mv Highly mesoporous carbons obtained using a dynamic template method
title Highly mesoporous carbons obtained using a dynamic template method
spellingShingle Highly mesoporous carbons obtained using a dynamic template method
Bandosz, Teresa J.
Carbon
Dynamic template carbonization
Silica
Mesoporosity
Sodium effect
title_short Highly mesoporous carbons obtained using a dynamic template method
title_full Highly mesoporous carbons obtained using a dynamic template method
title_fullStr Highly mesoporous carbons obtained using a dynamic template method
title_full_unstemmed Highly mesoporous carbons obtained using a dynamic template method
title_sort Highly mesoporous carbons obtained using a dynamic template method
dc.creator.none.fl_str_mv Bandosz, Teresa J.
Ovín Ania, María Concepción
author Bandosz, Teresa J.
author_facet Bandosz, Teresa J.
Ovín Ania, María Concepción
author_role author
author2 Ovín Ania, María Concepción
author2_role author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Carbon
Dynamic template carbonization
Silica
Mesoporosity
Sodium effect
topic Carbon
Dynamic template carbonization
Silica
Mesoporosity
Sodium effect
description New nanoporous carbons with extremely high mesopore volumes and surface areas were obtained using mesoporous silica with a 3-D wormhole porous framework as templates. Mesoporous silica was synthesized following the literature described methods. Polystyrene sulfonic acid-based organic salts were used as carbon precursors. To evaluate the effect of sodium on porosity development silica matrices with various thicknesses of pore walls were synthesized. Prior to carbonization, in order to increase surface heterogeneity, the precursor chemistry was modified by cation exchange with catalytically active metals (i.e., copper, nickel, cobalt). Carbonization followed by HF etching of silica templates generated mesoporous carbons with large surface areas and high pore volumes, which is accompanied by high dispersion of catalytically active metals on the carbon surface. Sodium present in the carbonaceous precursor causes in the dynamic template effect via its reactions with a silica matrix during carbonization. This, along with reactive gases evolved during heating lead to the expansion of the carbonaceous structure, and thus to the unique wide mesopore size distributions of the templated carbons with pore sizes between 10 and 50 nm and their volume exceeding 2.5 cm3 g−1.
publishDate 2006
dc.date.none.fl_str_mv 2006
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/98841
url http://hdl.handle.net/10261/98841
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.2005.10.034
Sí
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 15,812429

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