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Modulating the electromagnetic shielding mechanisms by thermal treatment of high porosity graphene aerogels

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dc.affiliation.dptoUC3M. Departamento de Ciencia e Ingeniería de Materiales e Ingeniería Químicaes
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Polímeros y Compositeses
dc.contributor.authorGonzález Sánchez, Marta
dc.contributor.authorBaselga Llidó, Juan
dc.contributor.authorPozuelo de Diego, Javier
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2024-01-29T18:17:16Z
dc.date.available2024-01-29T18:17:16Z
dc.date.issued2019-06-01
dc.description.abstractThe possibility of modulating the electromagnetic shielding mechanisms of graphene aerogels by varying the reduction state of graphene oxide was evaluated. Highly porous graphene aerogels were prepared by a modified hydrothermal treatment. Reduction state was varied through a subsequent thermal treatment under Ar-2/H-2 atmosphere at different temperatures: 400, 600 and 1000 degrees C. Thermal treatments reduced the amount of oxygenated functional groups without altering pore morphology and pore size as revealed by XRD, XPS, Raman and SEM image analysis. The resulting aerogels presented thus a very low density, in the range 8.5-5.6 mg/cm(3) and a conductivity in the range 10-80 S/m. Electromagnetic characterization was performed in the range 8-18 GHz in terms of power analysis and shielding efficiency. All samples transmitted less than 5% of incident power although an increase of the reflection mechanism was observed as the thermal treatment temperature was increased.en
dc.description.sponsorshipThis work was supported by grant NANONARQ (MAT2014- 57557-R) from the Spanish Ministerio de Economía y Competitividad.en
dc.format.extent8
dc.identifier.bibliographicCitationGonzález, M., Baselga, J., Pozuelo, J. (2019). Modulating the electromagnetic shielding mechanisms by thermal treatment of high porosity graphene aerogels. Carbon 147, Junio, 27-34. https://doi.org/10.1016/j.carbon.2019.02.068 (8p.)en
dc.identifier.doihttps://doi.org/10.1016/j.carbon.2019.02.068
dc.identifier.issn0008-6223
dc.identifier.publicationfirstpage27
dc.identifier.publicationissueJunioen
dc.identifier.publicationlastpage34
dc.identifier.publicationtitleCarbonen
dc.identifier.publicationvolume147
dc.identifier.urihttps://hdl.handle.net/10016/39620
dc.identifier.uxxiAR/0000023795
dc.language.isoengen
dc.publisherElsevieren
dc.relation.projectIDGobierno de España. MAT2014-57557-Res
dc.rights© 2019 Elsevier Ltd. All rights reserved.en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaMaterialeses
dc.subject.ecienciaQuímicaes
dc.subject.otherGrapheneen
dc.subject.otherElectromagnetic interference shieldingen
dc.subject.otherPorous graphene aerogelsen
dc.subject.otherCompositeen
dc.subject.otherComposite foamsen
dc.subject.otherLightweighten
dc.subject.otherPerformanceen
dc.subject.otherGraphiteen
dc.titleModulating the electromagnetic shielding mechanisms by thermal treatment of high porosity graphene aerogelsen
dc.typeresearch articleen
dc.type.hasVersionAMen
dspace.entity.typePublication
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