PURIFICAÇÃO DE NANOTUBOS DE CARBONO
Ano de defesa: | 2010 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Centro Universitário Franciscano
|
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Nanociências
|
Departamento: |
Biociências e Nanomateriais
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/478 |
Resumo: | Carbon Nanotubes (CNT) are obtained by the folding of one or many graphene leaves, in nanometric dimensions resulting in one tube of simple walls (SWNTC) or multiple walls (MWNTC). The electric, magnetic, optic and mechanic properties make the carbon nanotubes more fascinating and attractive to many applications, mainly in the nanotechnology area. In the synthesis process, with the NTCs formed, there are catalyst residues, soot and fullerenes. Thus, this paper had as aim to evaluate the NTC purification process, using oxidation with nitric and chloride acids (concentrated and diluted) with heating by microwave. In each 100mg sample, they were added 6mL of acid, in quartz tubes. After, the samples were irradiated for 0,10,20,40 and 60 minutes, in a 1400W potency (Multiwave 3000®, Paar, Graz, Austria). In the final solutions, nickel and lanthanum were determined by the spectrometry technique of optical emission with inductively coupled plasma (ICPOES). In order to evaluate the carbonacea impurity elimination and the NTCs integrity, it was used the Raman spectroscopy technique, gravimetric thermal analysis, transmission electronic microscopy and scanning electronic microscopy. Better La and Ni extraction were obtained when it was used HNO3, concentrated with 10 minutes irradiation, eliminating the carbonacea impurities without commitment in the NTC structure. |
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Mortari, Sérgio RobertoMonserrat, José MariaSilva, Ivana Zanella daSeixas, André Luís da Rosa2018-08-14T19:33:27Z2010-03-30Seixas, André Luís da Rosa. PURIFICAÇÃO DE NANOTUBOS DE CARBONO. 2010. 78f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS .http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/478Carbon Nanotubes (CNT) are obtained by the folding of one or many graphene leaves, in nanometric dimensions resulting in one tube of simple walls (SWNTC) or multiple walls (MWNTC). The electric, magnetic, optic and mechanic properties make the carbon nanotubes more fascinating and attractive to many applications, mainly in the nanotechnology area. In the synthesis process, with the NTCs formed, there are catalyst residues, soot and fullerenes. Thus, this paper had as aim to evaluate the NTC purification process, using oxidation with nitric and chloride acids (concentrated and diluted) with heating by microwave. In each 100mg sample, they were added 6mL of acid, in quartz tubes. After, the samples were irradiated for 0,10,20,40 and 60 minutes, in a 1400W potency (Multiwave 3000®, Paar, Graz, Austria). In the final solutions, nickel and lanthanum were determined by the spectrometry technique of optical emission with inductively coupled plasma (ICPOES). In order to evaluate the carbonacea impurity elimination and the NTCs integrity, it was used the Raman spectroscopy technique, gravimetric thermal analysis, transmission electronic microscopy and scanning electronic microscopy. Better La and Ni extraction were obtained when it was used HNO3, concentrated with 10 minutes irradiation, eliminating the carbonacea impurities without commitment in the NTC structure.Nanotubos de Carbono (NTC) são obtidos pelo enrolamento de uma ou várias folhas do grafeno, em dimensões nanométricas formando um tubo de paredes simples (SWNTC) ou de parede múltiplas (MWNTC). As propriedades elétricas, magnéticas, ópticas e mecânicas fazem dos nanotubos de carbono materiais fascinantes e atrativos para muitas aplicações, principalmente no campo da nanotecnologia. No processo de síntese, junto aos NTC formados, encontram-se resíduos de catalisador, fuligem e fulerenos. Assim, este trabalho teve por objetivo avaliar procedimento de purificação de NTC, utilizando oxidação com ácido nítrico e clorídrico (concentrados e diluídos) com aquecimento por irradiação com micro-ondas. A cada 100 mg de amostra foram adicionados 6 mL de ácido, em tubos de quartzo. Após, as amostras foram irradiadas por 0, 10, 20, 40 e 60 minutos, numa potência de 1400W (Multiwave 3000®, Anton Paar, Graz, Áustria). Nas soluções finais, níquel e lantânio foram determinados pela técnica de espectrometria de emissão óptica com plasma indutivamente acoplado (ICP-OES). Para avaliar a eliminação das impurezas carbonáceas e integridade dos NTC utilizou-se as técnicas de espectroscopia Raman, análise térmica gravimétrica, microscopia eletrônica de transmissão e microscopia eletrônica de varredura. Melhores extrações de Ni e La foram obtidas quando se utilizou HNO3 concentrado com 10 minutos de irradiação, eliminando as impurezas carbonáceas sem comprometimento na estrutura do NTC.Submitted by MARCIA ROVADOSCHI (marciar@unifra.br) on 2018-08-14T19:33:27Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_AndreLuisDaRosaSeixas.pdf: 3229232 bytes, checksum: 35b1061853e1cce25d7bad1657766eaa (MD5)Made available in DSpace on 2018-08-14T19:33:27Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Dissertacao_AndreLuisDaRosaSeixas.pdf: 3229232 bytes, checksum: 35b1061853e1cce25d7bad1657766eaa (MD5) Previous issue date: 2010-03-30application/pdfhttp://www.tede.universidadefranciscana.edu.br:8080/retrieve/1390/Dissertacao_AndreLuisDaRosaSeixas.pdf.jpgporCentro Universitário FranciscanoPrograma de Pós-Graduação em NanociênciasUNIFRABrasilBiociências e Nanomateriaishttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessNanotubos de Carbono, Purificação, Irradiação de Micro-ondasCarbon Nanotubes, Purification, Microwave IrradiationBiociências e NanomateriaisPURIFICAÇÃO DE NANOTUBOS DE CARBONOinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisreponame:Repositório Institucional Universidade Franciscanainstname:Universidade Franciscana (UFN)instacron:UFNLICENSElicense.txtlicense.txttext/plain; charset=utf-8309http://tede.universidadefranciscana.edu.br:8080/bitstream/UFN-BDTD/478/1/license.txte4ae80c7384074d77a55dabcdffdf13aMD51CC-LICENSElicense_urllicense_urltext/plain; charset=utf-849http://tede.universidadefranciscana.edu.br:8080/bitstream/UFN-BDTD/478/2/license_url4afdbb8c545fd630ea7db775da747b2fMD52license_textlicense_texttext/html; charset=utf-80http://tede.universidadefranciscana.edu.br:8080/bitstream/UFN-BDTD/478/3/license_textd41d8cd98f00b204e9800998ecf8427eMD53license_rdflicense_rdfapplication/rdf+xml; charset=utf-80http://tede.universidadefranciscana.edu.br:8080/bitstream/UFN-BDTD/478/4/license_rdfd41d8cd98f00b204e9800998ecf8427eMD54ORIGINALDissertacao_AndreLuisDaRosaSeixas.pdfDissertacao_AndreLuisDaRosaSeixas.pdfapplication/pdf3229232http://tede.universidadefranciscana.edu.br:8080/bitstream/UFN-BDTD/478/5/Dissertacao_AndreLuisDaRosaSeixas.pdf35b1061853e1cce25d7bad1657766eaaMD55TEXTDissertacao_AndreLuisDaRosaSeixas.pdf.txtDissertacao_AndreLuisDaRosaSeixas.pdf.txttext/plain123724http://tede.universidadefranciscana.edu.br:8080/bitstream/UFN-BDTD/478/6/Dissertacao_AndreLuisDaRosaSeixas.pdf.txt49a12423fb11a102f890a000a7a171afMD56THUMBNAILDissertacao_AndreLuisDaRosaSeixas.pdf.jpgDissertacao_AndreLuisDaRosaSeixas.pdf.jpgimage/jpeg3038http://tede.universidadefranciscana.edu.br:8080/bitstream/UFN-BDTD/478/7/Dissertacao_AndreLuisDaRosaSeixas.pdf.jpg829a84e9544a37bb11c88d3eb79502ddMD57UFN-BDTD/4782018-08-16 01:01:03.316oai:tede.universidadefranciscana.edu.br:UFN-BDTD/478RXN0ZSB0cmFiYWxobyBzZXLDoSBsaWNlbmNpYWRvIHNvYiBhIExpY2Vuw6dhIEF0cmlidWnDp8Ojby1Ow6NvQ29tZXJjaWFsLVNlbURlcml2YcOnw7VlcyA0LjAgSW50ZXJuYWNpb25hbCBDcmVhdGl2ZSBDb21tb25zLiBQYXJhIHZpc3VhbGl6YXIgdW1hIGPDs3BpYSBkZXN0YSBsaWNlbsOnYSwgdmlzaXRlIGh0dHA6Ly9jcmVhdGl2ZWNvbW1vbnMub3JnL2xpY2Vuc2VzL2J5LW5jLW5kLzQuMC8gb3UgbWFuZGUgdW1hIGNhcnRhIHBhcmEgQ3JlYXRpdmUgQ29tbW9ucywgUE8gQm94IDE4NjYsIE1vdW50YWluIFZpZXcsIENBIDk0MDQyLCBVU0EuRepositório de Publicaçõeshttp://www.tede.universidadefranciscana.edu.br:8080/http://www.tede.universidadefranciscana.edu.br:8080/oai/requestopendoar:2018-08-16T04:01:03Repositório Institucional Universidade Franciscana - Universidade Franciscana (UFN)false |
dc.title.por.fl_str_mv |
PURIFICAÇÃO DE NANOTUBOS DE CARBONO |
title |
PURIFICAÇÃO DE NANOTUBOS DE CARBONO |
spellingShingle |
PURIFICAÇÃO DE NANOTUBOS DE CARBONO Seixas, André Luís da Rosa Nanotubos de Carbono, Purificação, Irradiação de Micro-ondas Carbon Nanotubes, Purification, Microwave Irradiation Biociências e Nanomateriais |
title_short |
PURIFICAÇÃO DE NANOTUBOS DE CARBONO |
title_full |
PURIFICAÇÃO DE NANOTUBOS DE CARBONO |
title_fullStr |
PURIFICAÇÃO DE NANOTUBOS DE CARBONO |
title_full_unstemmed |
PURIFICAÇÃO DE NANOTUBOS DE CARBONO |
title_sort |
PURIFICAÇÃO DE NANOTUBOS DE CARBONO |
author |
Seixas, André Luís da Rosa |
author_facet |
Seixas, André Luís da Rosa |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Mortari, Sérgio Roberto |
dc.contributor.referee1.fl_str_mv |
Monserrat, José Maria |
dc.contributor.referee2.fl_str_mv |
Silva, Ivana Zanella da |
dc.contributor.author.fl_str_mv |
Seixas, André Luís da Rosa |
contributor_str_mv |
Mortari, Sérgio Roberto Monserrat, José Maria Silva, Ivana Zanella da |
dc.subject.por.fl_str_mv |
Nanotubos de Carbono, Purificação, Irradiação de Micro-ondas |
topic |
Nanotubos de Carbono, Purificação, Irradiação de Micro-ondas Carbon Nanotubes, Purification, Microwave Irradiation Biociências e Nanomateriais |
dc.subject.eng.fl_str_mv |
Carbon Nanotubes, Purification, Microwave Irradiation |
dc.subject.cnpq.fl_str_mv |
Biociências e Nanomateriais |
description |
Carbon Nanotubes (CNT) are obtained by the folding of one or many graphene leaves, in nanometric dimensions resulting in one tube of simple walls (SWNTC) or multiple walls (MWNTC). The electric, magnetic, optic and mechanic properties make the carbon nanotubes more fascinating and attractive to many applications, mainly in the nanotechnology area. In the synthesis process, with the NTCs formed, there are catalyst residues, soot and fullerenes. Thus, this paper had as aim to evaluate the NTC purification process, using oxidation with nitric and chloride acids (concentrated and diluted) with heating by microwave. In each 100mg sample, they were added 6mL of acid, in quartz tubes. After, the samples were irradiated for 0,10,20,40 and 60 minutes, in a 1400W potency (Multiwave 3000®, Paar, Graz, Austria). In the final solutions, nickel and lanthanum were determined by the spectrometry technique of optical emission with inductively coupled plasma (ICPOES). In order to evaluate the carbonacea impurity elimination and the NTCs integrity, it was used the Raman spectroscopy technique, gravimetric thermal analysis, transmission electronic microscopy and scanning electronic microscopy. Better La and Ni extraction were obtained when it was used HNO3, concentrated with 10 minutes irradiation, eliminating the carbonacea impurities without commitment in the NTC structure. |
publishDate |
2010 |
dc.date.issued.fl_str_mv |
2010-03-30 |
dc.date.accessioned.fl_str_mv |
2018-08-14T19:33:27Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Seixas, André Luís da Rosa. PURIFICAÇÃO DE NANOTUBOS DE CARBONO. 2010. 78f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS . |
dc.identifier.uri.fl_str_mv |
http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/478 |
identifier_str_mv |
Seixas, André Luís da Rosa. PURIFICAÇÃO DE NANOTUBOS DE CARBONO. 2010. 78f. Dissertação( Programa de Pós-Graduação em Nanociências) - Centro Universitário Franciscano, Santa Maria - RS . |
url |
http://www.tede.universidadefranciscana.edu.br:8080/handle/UFN-BDTD/478 |
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por |
language |
por |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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Centro Universitário Franciscano |
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Programa de Pós-Graduação em Nanociências |
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UNIFRA |
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Brasil |
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Biociências e Nanomateriais |
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Centro Universitário Franciscano |
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