Simulation of geological graphene genesis by the piston-cylinder apparatus
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
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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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 |
_version_ |
1752126695309049856 |