Production of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Technique
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | https://repositorio.unifesp.br/handle/11600/55323 http://dx.doi.org/10.1590/1980-5373-MR-2017-0406 |
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 degrees C. Results from thermogravimetric analysis showed that the samples calcined at 1000 degrees C were more resistant to oxidation at high temperatures. |
id |
UFSP_383e36234cd4e99ed715e7422712e53a |
---|---|
oai_identifier_str |
oai:repositorio.unifesp.br:11600/55323 |
network_acronym_str |
UFSP |
network_name_str |
Repositório Institucional da UNIFESP |
repository_id_str |
3465 |
spelling |
Ardila Rodriguez, Laura Angelica [UNIFESP]Pianassola, Matheus [UNIFESP]Travessa, Dilermando Nagle [UNIFESP]2020-07-17T14:03:21Z2020-07-17T14:03:21Z2017Materials Research-Ibero-American Journal Of Materials. Sao Carlos, v. 20, p. 96-103, 2017.1516-1439https://repositorio.unifesp.br/handle/11600/55323http://dx.doi.org/10.1590/1980-5373-MR-2017-0406S1516-14392017000700096.pdfS1516-1439201700070009610.1590/1980-5373-MR-2017-0406WOS:000425606700014In 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 degrees C. Results from thermogravimetric analysis showed that the samples calcined at 1000 degrees C were more resistant to oxidation at high temperatures.CNPqUniv Fed Sao Paulo UNIFESP, Inst Ciencia & Tecnol, Lab Metais & Proc Avancados, Sao Jose Dos Campos, SP, BrazilUniv Fed Sao Paulo UNIFESP, Inst Ciencia & Tecnol, Lab Metais & Proc Avancados, Sao Jose Dos Campos, SP, BrazilCNPq: 443395/2014-4Web of Science96-103engUniv Fed Sao Carlos, Dept Engenharia MaterialsMaterials Research-Ibero-American Journal Of Materials7th Latin American Conference on Metastable and Nanostructured Materials (NANOMAT)Carbon nanotubesTiO2sol-gelsurface coatingProduction of TiO2 Coated Multiwall Carbon Nanotubes by the Sol-Gel Techniqueinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleSao Carlos20info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESPORIGINALS1516-14392017000700096.pdfapplication/pdf2697501${dspace.ui.url}/bitstream/11600/55323/1/S1516-14392017000700096.pdf2ebe6b06875877c8e66516a8b301e760MD51open accessTEXTS1516-14392017000700096.pdf.txtS1516-14392017000700096.pdf.txtExtracted texttext/plain36511${dspace.ui.url}/bitstream/11600/55323/8/S1516-14392017000700096.pdf.txtaf1507cb75795612f454d17859b65096MD58open accessTHUMBNAILS1516-14392017000700096.pdf.jpgS1516-14392017000700096.pdf.jpgIM Thumbnailimage/jpeg6058${dspace.ui.url}/bitstream/11600/55323/10/S1516-14392017000700096.pdf.jpga7f2569d3e91bce69cd23e4da432d47eMD510open access11600/553232023-06-05 19:09:01.011open accessoai:repositorio.unifesp.br:11600/55323Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-06-05T22:09:01Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.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 Ardila Rodriguez, Laura Angelica [UNIFESP] 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 |
Ardila Rodriguez, Laura Angelica [UNIFESP] |
author_facet |
Ardila Rodriguez, Laura Angelica [UNIFESP] Pianassola, Matheus [UNIFESP] Travessa, Dilermando Nagle [UNIFESP] |
author_role |
author |
author2 |
Pianassola, Matheus [UNIFESP] Travessa, Dilermando Nagle [UNIFESP] |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Ardila Rodriguez, Laura Angelica [UNIFESP] Pianassola, Matheus [UNIFESP] Travessa, Dilermando Nagle [UNIFESP] |
dc.subject.eng.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 degrees C. Results from thermogravimetric analysis showed that the samples calcined at 1000 degrees C were more resistant to oxidation at high temperatures. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017 |
dc.date.accessioned.fl_str_mv |
2020-07-17T14:03:21Z |
dc.date.available.fl_str_mv |
2020-07-17T14:03:21Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Materials Research-Ibero-American Journal Of Materials. Sao Carlos, v. 20, p. 96-103, 2017. |
dc.identifier.uri.fl_str_mv |
https://repositorio.unifesp.br/handle/11600/55323 http://dx.doi.org/10.1590/1980-5373-MR-2017-0406 |
dc.identifier.issn.none.fl_str_mv |
1516-1439 |
dc.identifier.file.none.fl_str_mv |
S1516-14392017000700096.pdf |
dc.identifier.scielo.none.fl_str_mv |
S1516-14392017000700096 |
dc.identifier.doi.none.fl_str_mv |
10.1590/1980-5373-MR-2017-0406 |
dc.identifier.wos.none.fl_str_mv |
WOS:000425606700014 |
identifier_str_mv |
Materials Research-Ibero-American Journal Of Materials. Sao Carlos, v. 20, p. 96-103, 2017. 1516-1439 S1516-14392017000700096.pdf S1516-14392017000700096 10.1590/1980-5373-MR-2017-0406 WOS:000425606700014 |
url |
https://repositorio.unifesp.br/handle/11600/55323 http://dx.doi.org/10.1590/1980-5373-MR-2017-0406 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.none.fl_str_mv |
Materials Research-Ibero-American Journal Of Materials 7th Latin American Conference on Metastable and Nanostructured Materials (NANOMAT) |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
96-103 |
dc.coverage.none.fl_str_mv |
Sao Carlos |
dc.publisher.none.fl_str_mv |
Univ Fed Sao Carlos, Dept Engenharia Materials |
publisher.none.fl_str_mv |
Univ Fed Sao Carlos, Dept Engenharia Materials |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UNIFESP instname:Universidade Federal de São Paulo (UNIFESP) instacron:UNIFESP |
instname_str |
Universidade Federal de São Paulo (UNIFESP) |
instacron_str |
UNIFESP |
institution |
UNIFESP |
reponame_str |
Repositório Institucional da UNIFESP |
collection |
Repositório Institucional da UNIFESP |
bitstream.url.fl_str_mv |
${dspace.ui.url}/bitstream/11600/55323/1/S1516-14392017000700096.pdf ${dspace.ui.url}/bitstream/11600/55323/8/S1516-14392017000700096.pdf.txt ${dspace.ui.url}/bitstream/11600/55323/10/S1516-14392017000700096.pdf.jpg |
bitstream.checksum.fl_str_mv |
2ebe6b06875877c8e66516a8b301e760 af1507cb75795612f454d17859b65096 a7f2569d3e91bce69cd23e4da432d47e |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP) |
repository.mail.fl_str_mv |
|
_version_ |
1802764234772185088 |