The production of reduced graphene oxide by a low-cost vacuum system for supercapacitor applications

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dc.contributor.authorCARDOSO, QUEZIA
dc.contributor.authorSILVA, FRANKS M.
dc.contributor.authorVIEIRA, LIGIA S.
dc.contributor.authorCASINI, JULIO C.S.
dc.contributor.authorSAKATA, SOLANGE K.
dc.contributor.authorFARIA, RUBENS N. de
dc.coverageInternacionalpt_BR
dc.date.accessioned2018-11-29T13:26:03Z
dc.date.available2018-11-29T13:26:03Z
dc.date.issued2018pt_BR
dc.description.abstractGraphene has attracted significant interest because of its excellent electrical properties. However, a practical method for producing graphene on a large scale is yet to be developed. Graphene oxide (GO) can be partially reduced to graphene-like sheets by removing the oxygencontaining groups and recovering the conjugated structure. GO can be produced using inexpensive graphite as the raw material via cost-effective chemical methods. High vacuum and temperature (10−7 mbar and 1100°C, respectively) conditions are well-known to enable the preparation of reduced powder at the laboratory scale. However, a large-scale high vacuum reduction system that can be routinely operated at 10−7 mbar requires considerable initial capital as well as substantial operational and maintenance costs. The current study aims at developing an inexpensive method for the large-scale reduction of graphene oxide. A stainless steel vessel was evacuated to backing-pump pressure (10−2 mbar) and used to process GO at a range of temperatures. The reduction of GO powder at low vacuum pressures was attempted and investigated by X-ray diffraction and Fourier transform infrared spectroscopy. The experimental results of processing GO powder at various temperatures (200–1000°C) at relatively low pressures are reported. The microstructures of the processed materials were investigated using scanning electron microscopy and chemical microanalyses via energy dispersive X-ray analysis.pt_BR
dc.format.extent609-612pt_BR
dc.identifier.citationCARDOSO, QUEZIA; SILVA, FRANKS M.; VIEIRA, LIGIA S.; CASINI, JULIO C.S.; SAKATA, SOLANGE K.; FARIA, RUBENS N. de. The production of reduced graphene oxide by a low-cost vacuum system for supercapacitor applications. <b>Materials Science Forum</b>, v. 930, p. 609-612, 2018. DOI: <a href="https://dx.doi.org/10.4028/www.scientific.net/MSF.930.609">10.4028/www.scientific.net/MSF.930.609</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/29287.
dc.identifier.doi10.4028/www.scientific.net/MSF.930.609pt_BR
dc.identifier.issn0255-5476pt_BR
dc.identifier.orcidaguardandopt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-6072-5853
dc.identifier.percentilfiSem Percentil
dc.identifier.percentilfiCiteScore15.50
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/29287
dc.identifier.vol930pt_BR
dc.relation.ispartofMaterials Science Forumpt_BR
dc.rightsopenAccesspt_BR
dc.subjectcapacitors
dc.subjectfourier transformation
dc.subjectgraphene
dc.subjectinfrared spectra
dc.subjectmicrostructure
dc.subjectoxides
dc.subjectproduction
dc.subjectreduction
dc.subjectscanning electron microscopy
dc.subjecttemperature dependence
dc.subjectx-ray diffraction
dc.titleThe production of reduced graphene oxide by a low-cost vacuum system for supercapacitor applicationspt_BR
dc.typeArtigo de periódicopt_BR
dspace.entity.typePublication
ipen.autorRUBENS NUNES DE FARIA JUNIOR
ipen.autorSOLANGE KAZUMI SAKATA
ipen.autorQUEZIA DE AGUIAR CARDOSO
ipen.codigoautor227
ipen.codigoautor7038
ipen.codigoautor12720
ipen.contributor.ipenauthorRUBENS NUNES DE FARIA JUNIOR
ipen.contributor.ipenauthorSOLANGE KAZUMI SAKATA
ipen.contributor.ipenauthorQUEZIA DE AGUIAR CARDOSO
ipen.date.recebimento18-11pt_BR
ipen.identifier.fiSem F.I.pt_BR
ipen.identifier.fiCiteScore0.5
ipen.identifier.ipendoc25074pt_BR
ipen.type.genreArtigo
relation.isAuthorOfPublication20cb7788-3957-4550-9e5c-cf7f5261eec4
relation.isAuthorOfPublicationfb62f288-104d-4352-aed0-a18e0da21a1b
relation.isAuthorOfPublication71551dad-b487-4b88-bd0a-1a84a1f489e8
relation.isAuthorOfPublication.latestForDiscovery71551dad-b487-4b88-bd0a-1a84a1f489e8
sigepi.autor.atividadeCARDOSO, QUEZIA:12720:730:Spt_BR
sigepi.autor.atividadeSAKATA, SOLANGE K.:7038:220:Npt_BR
sigepi.autor.atividadeFARIA, RUBENS N. DE:227:730:Npt_BR
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