Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique

Detalhes bibliográficos
Autor(a) principal: Rodríguez,Laura Angélica Ardila
Data de Publicação: 2017
Outros Autores: Pianassola,Matheus, Travessa,Dilermando Nagle
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000700096
Resumo: In recent years, efforts in developing high strength-low density materials are increasing significantly. One of the promising materials to attend this demand is the carbon nanotube (CNT), to be used mainly as a reinforcing phase in lightweight metal matrix composites (MMC). In the present work, the sol-gel technique has been employed to obtain TiO2 coating on the surface of commercial multiwall carbon nanotubes (MWCNT). The aim of such coating is to improve the thermal stability of MWCNT in oxidize environment, which is necessary in most of MMC processing routes. Calcination in inert atmosphere was performed in order to crystallize a stable coating phase. The hybrid CNT/TiO2 nanocomposite was characterized by X-Ray Diffractometry (XRD), Raman spectroscopy, Thermogravimetry (TGA) and Field Emission Gun - Scanning Electron Microscopy (FEG-SEM). The coating structure was observed to change from anatase to rutile, as the calcination temperature increases from 500 to 1000°C. Results from thermogravimetric analysis showed that the samples calcined at 1000 ºC were more resistant to oxidation at high temperatures.
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spelling Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel TechniqueCarbon nanotubesTiO2sol-gelsurface coatingIn recent years, efforts in developing high strength-low density materials are increasing significantly. One of the promising materials to attend this demand is the carbon nanotube (CNT), to be used mainly as a reinforcing phase in lightweight metal matrix composites (MMC). In the present work, the sol-gel technique has been employed to obtain TiO2 coating on the surface of commercial multiwall carbon nanotubes (MWCNT). The aim of such coating is to improve the thermal stability of MWCNT in oxidize environment, which is necessary in most of MMC processing routes. Calcination in inert atmosphere was performed in order to crystallize a stable coating phase. The hybrid CNT/TiO2 nanocomposite was characterized by X-Ray Diffractometry (XRD), Raman spectroscopy, Thermogravimetry (TGA) and Field Emission Gun - Scanning Electron Microscopy (FEG-SEM). The coating structure was observed to change from anatase to rutile, as the calcination temperature increases from 500 to 1000°C. Results from thermogravimetric analysis showed that the samples calcined at 1000 ºC were more resistant to oxidation at high temperatures.ABM, ABC, ABPol2017-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000700096Materials Research v.20 suppl.1 2017reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2017-0406info:eu-repo/semantics/openAccessRodríguez,Laura Angélica ArdilaPianassola,MatheusTravessa,Dilermando Nagleeng2018-02-16T00:00:00Zoai:scielo:S1516-14392017000700096Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2018-02-16T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
title Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
spellingShingle Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
Rodríguez,Laura Angélica Ardila
Carbon nanotubes
TiO2
sol-gel
surface coating
title_short Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
title_full Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
title_fullStr Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
title_full_unstemmed Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
title_sort Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
author Rodríguez,Laura Angélica Ardila
author_facet Rodríguez,Laura Angélica Ardila
Pianassola,Matheus
Travessa,Dilermando Nagle
author_role author
author2 Pianassola,Matheus
Travessa,Dilermando Nagle
author2_role author
author
dc.contributor.author.fl_str_mv Rodríguez,Laura Angélica Ardila
Pianassola,Matheus
Travessa,Dilermando Nagle
dc.subject.por.fl_str_mv Carbon nanotubes
TiO2
sol-gel
surface coating
topic Carbon nanotubes
TiO2
sol-gel
surface coating
description In recent years, efforts in developing high strength-low density materials are increasing significantly. One of the promising materials to attend this demand is the carbon nanotube (CNT), to be used mainly as a reinforcing phase in lightweight metal matrix composites (MMC). In the present work, the sol-gel technique has been employed to obtain TiO2 coating on the surface of commercial multiwall carbon nanotubes (MWCNT). The aim of such coating is to improve the thermal stability of MWCNT in oxidize environment, which is necessary in most of MMC processing routes. Calcination in inert atmosphere was performed in order to crystallize a stable coating phase. The hybrid CNT/TiO2 nanocomposite was characterized by X-Ray Diffractometry (XRD), Raman spectroscopy, Thermogravimetry (TGA) and Field Emission Gun - Scanning Electron Microscopy (FEG-SEM). The coating structure was observed to change from anatase to rutile, as the calcination temperature increases from 500 to 1000°C. Results from thermogravimetric analysis showed that the samples calcined at 1000 ºC were more resistant to oxidation at high temperatures.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
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=S1516-14392017000700096
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000700096
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2017-0406
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 ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.20 suppl.1 2017
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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