Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite

Detalhes bibliográficos
Autor(a) principal: Martinez,José Armando Espinosa
Data de Publicação: 2021
Outros Autores: Sanchez Junior,Miguel, Golçalves,Augusto Nobre, Orrego,Roxana Maria Martinez, Florêncio,Odila
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Matéria (Rio de Janeiro. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000200337
Resumo: ABSTRACT Three different processes for the synthetization of exfoliated graphite intercalation compound have been tested in two different type of graphite, one in powder form and the other one as flakes. Each graphite was oxidized applying the same experimental conditions (sonification, neutralization, filtering and drying) but using three different auxiliary oxidizers (H2O2, HNO3 and KClO3) previously mixed with H2SO4. The resulting synthesized samples were characterized by X-ray diffraction, Raman spectroscopy and scanning electron microscopy. The Raman spectra analysis of the oxidized samples correspond to that of a graphene of few layers. Stronger delamination and exfoliation were observed in the samples of graphite, originally in powder form, treated with H2SO4/HNO3.
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spelling Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphitegraphitegrapheneRaman spectroscopyintercalationABSTRACT Three different processes for the synthetization of exfoliated graphite intercalation compound have been tested in two different type of graphite, one in powder form and the other one as flakes. Each graphite was oxidized applying the same experimental conditions (sonification, neutralization, filtering and drying) but using three different auxiliary oxidizers (H2O2, HNO3 and KClO3) previously mixed with H2SO4. The resulting synthesized samples were characterized by X-ray diffraction, Raman spectroscopy and scanning electron microscopy. The Raman spectra analysis of the oxidized samples correspond to that of a graphene of few layers. Stronger delamination and exfoliation were observed in the samples of graphite, originally in powder form, treated with H2SO4/HNO3.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000200337Matéria (Rio de Janeiro) v.26 n.2 2021reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620210002.1293info:eu-repo/semantics/openAccessMartinez,José Armando EspinosaSanchez Junior,MiguelGolçalves,Augusto NobreOrrego,Roxana Maria MartinezFlorêncio,Odilaeng2021-05-21T00:00:00Zoai:scielo:S1517-70762021000200337Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2021-05-21T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite
title Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite
spellingShingle Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite
Martinez,José Armando Espinosa
graphite
graphene
Raman spectroscopy
intercalation
title_short Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite
title_full Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite
title_fullStr Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite
title_full_unstemmed Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite
title_sort Influence of different oxidation mechanisms on the exfoliation of intercalated graphite bisulfate using two types of graphite
author Martinez,José Armando Espinosa
author_facet Martinez,José Armando Espinosa
Sanchez Junior,Miguel
Golçalves,Augusto Nobre
Orrego,Roxana Maria Martinez
Florêncio,Odila
author_role author
author2 Sanchez Junior,Miguel
Golçalves,Augusto Nobre
Orrego,Roxana Maria Martinez
Florêncio,Odila
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Martinez,José Armando Espinosa
Sanchez Junior,Miguel
Golçalves,Augusto Nobre
Orrego,Roxana Maria Martinez
Florêncio,Odila
dc.subject.por.fl_str_mv graphite
graphene
Raman spectroscopy
intercalation
topic graphite
graphene
Raman spectroscopy
intercalation
description ABSTRACT Three different processes for the synthetization of exfoliated graphite intercalation compound have been tested in two different type of graphite, one in powder form and the other one as flakes. Each graphite was oxidized applying the same experimental conditions (sonification, neutralization, filtering and drying) but using three different auxiliary oxidizers (H2O2, HNO3 and KClO3) previously mixed with H2SO4. The resulting synthesized samples were characterized by X-ray diffraction, Raman spectroscopy and scanning electron microscopy. The Raman spectra analysis of the oxidized samples correspond to that of a graphene of few layers. Stronger delamination and exfoliation were observed in the samples of graphite, originally in powder form, treated with H2SO4/HNO3.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000200337
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762021000200337
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1517-707620210002.1293
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
dc.source.none.fl_str_mv Matéria (Rio de Janeiro) v.26 n.2 2021
reponame:Matéria (Rio de Janeiro. Online)
instname:Matéria (Rio de Janeiro. Online)
instacron:RLAM
instname_str Matéria (Rio de Janeiro. Online)
instacron_str RLAM
institution RLAM
reponame_str Matéria (Rio de Janeiro. Online)
collection Matéria (Rio de Janeiro. Online)
repository.name.fl_str_mv Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)
repository.mail.fl_str_mv ||materia@labh2.coppe.ufrj.br
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