Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites

In this work, the synthesis of graphene-like nanosheets (GNS) by an electrochemical exfoliation method, their microstructural characterization and their performance as fillers in a ceramic matrix composite have been assessed. To fabricate the composites, 3 mol % yttria tetragonal zirconia (3YTZP) po...

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Detalles Bibliográficos
Autores: Poyato, Rosalía, Verdugo, Reyes, Muñoz-Ferreiro, Carmen, Gallardo-López, Ángela
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/216102
Acceso en línea:http://hdl.handle.net/10261/216102
Access Level:acceso abierto
Palabra clave:Graphene
Electrochemical exfoliation method
3YTZP
Ceramic nanocomposites
Planetary ball milling
SPS
Raman spectroscopy
Electron microscopy
Vickers indentations
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spelling Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic NanocompositesPoyato, RosalíaVerdugo, ReyesMuñoz-Ferreiro, CarmenGallardo-López, ÁngelaGrapheneElectrochemical exfoliation method3YTZPCeramic nanocompositesPlanetary ball millingSPSRaman spectroscopyElectron microscopyVickers indentationsIn this work, the synthesis of graphene-like nanosheets (GNS) by an electrochemical exfoliation method, their microstructural characterization and their performance as fillers in a ceramic matrix composite have been assessed. To fabricate the composites, 3 mol % yttria tetragonal zirconia (3YTZP) powders with 1 vol % GNS were processed by planetary ball milling in tert-butanol to enhance the GNS distribution throughout the matrix, and densified by spark plasma sintering (SPS). According to a thorough Raman analysis and SEM observations, the electrochemically exfoliated GNS possessed less than 10 graphene layers and a lateral size lower than 1 m. However, they contained amorphous carbon and vacancy-like defects. In contrast the GNS in the sintered composite exhibited enhanced quality with a lower number of defects, and they were wavy, semi-transparent and with very low thickness. The obtained nanocomposite was fully dense with a homogeneous distribution of GNS into the matrix. The Vickers hardness of the nanocomposite showed similar values to those of a monolithic 3YTZP ceramic sintered in the same conditions, and to the reported ones for a 3YTZP composite with the same content of commercial graphene nanosheets.Peer reviewedMultidisciplinary Digital Publishing InstituteConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/216102reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3390/ma13112656Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2161022026-05-22T06:33:51Z
dc.title.none.fl_str_mv Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites
title Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites
spellingShingle Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites
Poyato, Rosalía
Graphene
Electrochemical exfoliation method
3YTZP
Ceramic nanocomposites
Planetary ball milling
SPS
Raman spectroscopy
Electron microscopy
Vickers indentations
title_short Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites
title_full Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites
title_fullStr Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites
title_full_unstemmed Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites
title_sort Electrochemically Exfoliated Graphene-Like Nanosheets for Use in Ceramic Nanocomposites
dc.creator.none.fl_str_mv Poyato, Rosalía
Verdugo, Reyes
Muñoz-Ferreiro, Carmen
Gallardo-López, Ángela
author Poyato, Rosalía
author_facet Poyato, Rosalía
Verdugo, Reyes
Muñoz-Ferreiro, Carmen
Gallardo-López, Ángela
author_role author
author2 Verdugo, Reyes
Muñoz-Ferreiro, Carmen
Gallardo-López, Ángela
author2_role author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Graphene
Electrochemical exfoliation method
3YTZP
Ceramic nanocomposites
Planetary ball milling
SPS
Raman spectroscopy
Electron microscopy
Vickers indentations
topic Graphene
Electrochemical exfoliation method
3YTZP
Ceramic nanocomposites
Planetary ball milling
SPS
Raman spectroscopy
Electron microscopy
Vickers indentations
description In this work, the synthesis of graphene-like nanosheets (GNS) by an electrochemical exfoliation method, their microstructural characterization and their performance as fillers in a ceramic matrix composite have been assessed. To fabricate the composites, 3 mol % yttria tetragonal zirconia (3YTZP) powders with 1 vol % GNS were processed by planetary ball milling in tert-butanol to enhance the GNS distribution throughout the matrix, and densified by spark plasma sintering (SPS). According to a thorough Raman analysis and SEM observations, the electrochemically exfoliated GNS possessed less than 10 graphene layers and a lateral size lower than 1 m. However, they contained amorphous carbon and vacancy-like defects. In contrast the GNS in the sintered composite exhibited enhanced quality with a lower number of defects, and they were wavy, semi-transparent and with very low thickness. The obtained nanocomposite was fully dense with a homogeneous distribution of GNS into the matrix. The Vickers hardness of the nanocomposite showed similar values to those of a monolithic 3YTZP ceramic sintered in the same conditions, and to the reported ones for a 3YTZP composite with the same content of commercial graphene nanosheets.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/216102
url http://hdl.handle.net/10261/216102
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3390/ma13112656
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
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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