Simulation of geological graphene genesis by the piston-cylinder apparatus

Detalhes bibliográficos
Autor(a) principal: Nobre,Augusto Gonçalves
Data de Publicação: 2022
Outros Autores: Salazar-Naranjo,Andrés Fabián, Andrade,Fabio Ramos Dias de, Vlach,Silvio Roberto Farias, Ando,Rômulo Augusto
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=S1517-70762022000400210
Resumo: ABSTRACT Stable natural graphene occurs in graphite- and phyllosilicate-bearing low-grade metamorphic rocks. The present work simulates the process of geological formation of graphene using a piston-cylinder apparatus, promoting diffusion between talc and graphite at 700ºC and 900 MPa for a period of 24 h. The experimental products were analyzed by optical and scanning electron microscopy for description of the microstructures formed between the mineral precursors. The talc-graphite diffusion zone was also analyzed by Raman spectroscopy. Results indicate that graphite becomes progressively more deformed near the talc diffusion zone and eventually undergoes cleavage. Graphene becomes stable on the talc substrate in the center of diffusion zone. Therefore, the search for deposits of natural graphene and other nanomaterials in geological context is promising.
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spelling Simulation of geological graphene genesis by the piston-cylinder apparatusMineral nanotechnologyNatural grapheneExperimental mineralogyGraphiteTalcABSTRACT Stable natural graphene occurs in graphite- and phyllosilicate-bearing low-grade metamorphic rocks. The present work simulates the process of geological formation of graphene using a piston-cylinder apparatus, promoting diffusion between talc and graphite at 700ºC and 900 MPa for a period of 24 h. The experimental products were analyzed by optical and scanning electron microscopy for description of the microstructures formed between the mineral precursors. The talc-graphite diffusion zone was also analyzed by Raman spectroscopy. Results indicate that graphite becomes progressively more deformed near the talc diffusion zone and eventually undergoes cleavage. Graphene becomes stable on the talc substrate in the center of diffusion zone. Therefore, the search for deposits of natural graphene and other nanomaterials in geological context is promising.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762022000400210Matéria (Rio de Janeiro) v.27 n.4 2022reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/1517-7076-rmat-2022-0122info:eu-repo/semantics/openAccessNobre,Augusto GonçalvesSalazar-Naranjo,Andrés FabiánAndrade,Fabio Ramos Dias deVlach,Silvio Roberto FariasAndo,Rômulo Augustoeng2022-10-26T00:00:00Zoai:scielo:S1517-70762022000400210Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2022-10-26T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv Simulation of geological graphene genesis by the piston-cylinder apparatus
title Simulation of geological graphene genesis by the piston-cylinder apparatus
spellingShingle Simulation of geological graphene genesis by the piston-cylinder apparatus
Nobre,Augusto Gonçalves
Mineral nanotechnology
Natural graphene
Experimental mineralogy
Graphite
Talc
title_short Simulation of geological graphene genesis by the piston-cylinder apparatus
title_full Simulation of geological graphene genesis by the piston-cylinder apparatus
title_fullStr Simulation of geological graphene genesis by the piston-cylinder apparatus
title_full_unstemmed Simulation of geological graphene genesis by the piston-cylinder apparatus
title_sort Simulation of geological graphene genesis by the piston-cylinder apparatus
author Nobre,Augusto Gonçalves
author_facet Nobre,Augusto Gonçalves
Salazar-Naranjo,Andrés Fabián
Andrade,Fabio Ramos Dias de
Vlach,Silvio Roberto Farias
Ando,Rômulo Augusto
author_role author
author2 Salazar-Naranjo,Andrés Fabián
Andrade,Fabio Ramos Dias de
Vlach,Silvio Roberto Farias
Ando,Rômulo Augusto
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Nobre,Augusto Gonçalves
Salazar-Naranjo,Andrés Fabián
Andrade,Fabio Ramos Dias de
Vlach,Silvio Roberto Farias
Ando,Rômulo Augusto
dc.subject.por.fl_str_mv Mineral nanotechnology
Natural graphene
Experimental mineralogy
Graphite
Talc
topic Mineral nanotechnology
Natural graphene
Experimental mineralogy
Graphite
Talc
description ABSTRACT Stable natural graphene occurs in graphite- and phyllosilicate-bearing low-grade metamorphic rocks. The present work simulates the process of geological formation of graphene using a piston-cylinder apparatus, promoting diffusion between talc and graphite at 700ºC and 900 MPa for a period of 24 h. The experimental products were analyzed by optical and scanning electron microscopy for description of the microstructures formed between the mineral precursors. The talc-graphite diffusion zone was also analyzed by Raman spectroscopy. Results indicate that graphite becomes progressively more deformed near the talc diffusion zone and eventually undergoes cleavage. Graphene becomes stable on the talc substrate in the center of diffusion zone. Therefore, the search for deposits of natural graphene and other nanomaterials in geological context is promising.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
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=S1517-70762022000400210
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762022000400210
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1517-7076-rmat-2022-0122
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.27 n.4 2022
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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