Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/165622 |
Resumo: | This work aimed to produce graphene oxide with few graphene layers, a low number of defects, good conductivity and reasonable amount of oxygen, adequate for use as filler in polymeric composites. Two starting materials were evaluated: expanded graphite and graphite flakes. The method of oxidation used was the Staudenmaier one, which was tested over different lengths of time. No appreciable differences were found among the oxidation times and so the lowest oxidation time (24 h) was chosen as the most adequate. An investigation was also conducted into suitable temperatures for the reduction of graphite oxide. A temperature of 1000 ºC gave the best results, allowing a good quality material with few defects to be obtained. The reduction was also evaluated under inert and normal atmosphere. The best results were obtained when the least modified material, e. g., graphite flakes, was used as a starting material, oxidized for 24h and reduced at 1000 ºC for 30 s in a quartz ampoule under a normal atmosphere. |
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Pavoski, GiovaniMaraschin, Thuany GarciaFim, Fabiana de CarvalhoBalzaretti, Naira MariaGalland, Griselda Ligia BarreraMoura, Cassio SteinBasso, Nara Regina de Souza2017-08-23T02:31:24Z20171516-1439http://hdl.handle.net/10183/165622001024808This work aimed to produce graphene oxide with few graphene layers, a low number of defects, good conductivity and reasonable amount of oxygen, adequate for use as filler in polymeric composites. Two starting materials were evaluated: expanded graphite and graphite flakes. The method of oxidation used was the Staudenmaier one, which was tested over different lengths of time. No appreciable differences were found among the oxidation times and so the lowest oxidation time (24 h) was chosen as the most adequate. An investigation was also conducted into suitable temperatures for the reduction of graphite oxide. A temperature of 1000 ºC gave the best results, allowing a good quality material with few defects to be obtained. The reduction was also evaluated under inert and normal atmosphere. The best results were obtained when the least modified material, e. g., graphite flakes, was used as a starting material, oxidized for 24h and reduced at 1000 ºC for 30 s in a quartz ampoule under a normal atmosphere.application/pdfengMaterials research : ibero-american journal of materials. São Carlos, SP. Vol. 20, no. 1 (Jan./Feb. 2017), p. 53-61GrafenoGrafiteOxidaçãoGraphene oxideFew layer grapheneGraphiteGrapheneFew layer reduced graphene oxide : evaluation of the best experimental conditions for easy productioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001024808.pdf001024808.pdfTexto completo (inglês)application/pdf2289850http://www.lume.ufrgs.br/bitstream/10183/165622/1/001024808.pdfc27c3c3675b4ce4fc54bace6ae1c1620MD51TEXT001024808.pdf.txt001024808.pdf.txtExtracted Texttext/plain33751http://www.lume.ufrgs.br/bitstream/10183/165622/2/001024808.pdf.txt0ed8906957c77ed9eec1978fa6af2636MD52THUMBNAIL001024808.pdf.jpg001024808.pdf.jpgGenerated Thumbnailimage/jpeg2058http://www.lume.ufrgs.br/bitstream/10183/165622/3/001024808.pdf.jpg4e6e7698a25ab4022c9e07684dd5fea8MD5310183/1656222023-08-19 03:32:57.54203oai:www.lume.ufrgs.br:10183/165622Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-08-19T06:32:57Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production |
title |
Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production |
spellingShingle |
Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production Pavoski, Giovani Grafeno Grafite Oxidação Graphene oxide Few layer graphene Graphite Graphene |
title_short |
Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production |
title_full |
Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production |
title_fullStr |
Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production |
title_full_unstemmed |
Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production |
title_sort |
Few layer reduced graphene oxide : evaluation of the best experimental conditions for easy production |
author |
Pavoski, Giovani |
author_facet |
Pavoski, Giovani Maraschin, Thuany Garcia Fim, Fabiana de Carvalho Balzaretti, Naira Maria Galland, Griselda Ligia Barrera Moura, Cassio Stein Basso, Nara Regina de Souza |
author_role |
author |
author2 |
Maraschin, Thuany Garcia Fim, Fabiana de Carvalho Balzaretti, Naira Maria Galland, Griselda Ligia Barrera Moura, Cassio Stein Basso, Nara Regina de Souza |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Pavoski, Giovani Maraschin, Thuany Garcia Fim, Fabiana de Carvalho Balzaretti, Naira Maria Galland, Griselda Ligia Barrera Moura, Cassio Stein Basso, Nara Regina de Souza |
dc.subject.por.fl_str_mv |
Grafeno Grafite Oxidação |
topic |
Grafeno Grafite Oxidação Graphene oxide Few layer graphene Graphite Graphene |
dc.subject.eng.fl_str_mv |
Graphene oxide Few layer graphene Graphite Graphene |
description |
This work aimed to produce graphene oxide with few graphene layers, a low number of defects, good conductivity and reasonable amount of oxygen, adequate for use as filler in polymeric composites. Two starting materials were evaluated: expanded graphite and graphite flakes. The method of oxidation used was the Staudenmaier one, which was tested over different lengths of time. No appreciable differences were found among the oxidation times and so the lowest oxidation time (24 h) was chosen as the most adequate. An investigation was also conducted into suitable temperatures for the reduction of graphite oxide. A temperature of 1000 ºC gave the best results, allowing a good quality material with few defects to be obtained. The reduction was also evaluated under inert and normal atmosphere. The best results were obtained when the least modified material, e. g., graphite flakes, was used as a starting material, oxidized for 24h and reduced at 1000 ºC for 30 s in a quartz ampoule under a normal atmosphere. |
publishDate |
2017 |
dc.date.accessioned.fl_str_mv |
2017-08-23T02:31:24Z |
dc.date.issued.fl_str_mv |
2017 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/165622 |
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1516-1439 |
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001024808 |
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1516-1439 001024808 |
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http://hdl.handle.net/10183/165622 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Materials research : ibero-american journal of materials. São Carlos, SP. Vol. 20, no. 1 (Jan./Feb. 2017), p. 53-61 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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