Amine functionalization of carbon nanotubes with solid urea using different plasma treatments

Detalhes bibliográficos
Autor(a) principal: Tromm Steffen, Teresa
Data de Publicação: 2022
Outros Autores: César Fontana, Luis, Hammer, Peter [UNESP], Becker, Daniela
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.apsusc.2022.152493
http://hdl.handle.net/11449/234027
Resumo: Carbon nanotubes (CNTs) were amine-functionalized through treatments in inductively coupled post-discharge, capacitively coupled micro spark and pulsed micro arc/glow discharge plasma regions, using urea in solid state as functionalization agent. In each plasma mode, the CNT functionalization yield was evaluated according to the variation of the plasma power and treatment time. For that, the samples were characterized through Fourier-transform infrared spectroscopy, Raman spectroscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The results show that, while preserving the integrity of the CNTs, an 80 % increase in oxygen content and up to 1.2 at.% of nitrogen was achieved using an asymmetric bipolar plasma power supply (ABiPPS). The adsorbed water can be completely removed from the CNTs through both a high-plasma-density treatment and a methanol washing procedure, conducted before sample characterization to remove any unreacted urea.
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spelling Amine functionalization of carbon nanotubes with solid urea using different plasma treatmentsCarbon nanotubeFunctionalizationPlasmaUreaCarbon nanotubes (CNTs) were amine-functionalized through treatments in inductively coupled post-discharge, capacitively coupled micro spark and pulsed micro arc/glow discharge plasma regions, using urea in solid state as functionalization agent. In each plasma mode, the CNT functionalization yield was evaluated according to the variation of the plasma power and treatment time. For that, the samples were characterized through Fourier-transform infrared spectroscopy, Raman spectroscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The results show that, while preserving the integrity of the CNTs, an 80 % increase in oxygen content and up to 1.2 at.% of nitrogen was achieved using an asymmetric bipolar plasma power supply (ABiPPS). The adsorbed water can be completely removed from the CNTs through both a high-plasma-density treatment and a methanol washing procedure, conducted before sample characterization to remove any unreacted urea.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Center for Technological Sciences UDESCSão Paulo State University (UNESP) Institute of ChemistrySão Paulo State University (UNESP) Institute of ChemistryCAPES: 001UDESCUniversidade Estadual Paulista (UNESP)Tromm Steffen, TeresaCésar Fontana, LuisHammer, Peter [UNESP]Becker, Daniela2022-05-01T12:40:46Z2022-05-01T12:40:46Z2022-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.apsusc.2022.152493Applied Surface Science, v. 583.0169-4332http://hdl.handle.net/11449/23402710.1016/j.apsusc.2022.1524932-s2.0-85123029914Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengApplied Surface Scienceinfo:eu-repo/semantics/openAccess2022-05-01T12:40:47Zoai:repositorio.unesp.br:11449/234027Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:29:52.667270Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Amine functionalization of carbon nanotubes with solid urea using different plasma treatments
title Amine functionalization of carbon nanotubes with solid urea using different plasma treatments
spellingShingle Amine functionalization of carbon nanotubes with solid urea using different plasma treatments
Tromm Steffen, Teresa
Carbon nanotube
Functionalization
Plasma
Urea
title_short Amine functionalization of carbon nanotubes with solid urea using different plasma treatments
title_full Amine functionalization of carbon nanotubes with solid urea using different plasma treatments
title_fullStr Amine functionalization of carbon nanotubes with solid urea using different plasma treatments
title_full_unstemmed Amine functionalization of carbon nanotubes with solid urea using different plasma treatments
title_sort Amine functionalization of carbon nanotubes with solid urea using different plasma treatments
author Tromm Steffen, Teresa
author_facet Tromm Steffen, Teresa
César Fontana, Luis
Hammer, Peter [UNESP]
Becker, Daniela
author_role author
author2 César Fontana, Luis
Hammer, Peter [UNESP]
Becker, Daniela
author2_role author
author
author
dc.contributor.none.fl_str_mv UDESC
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Tromm Steffen, Teresa
César Fontana, Luis
Hammer, Peter [UNESP]
Becker, Daniela
dc.subject.por.fl_str_mv Carbon nanotube
Functionalization
Plasma
Urea
topic Carbon nanotube
Functionalization
Plasma
Urea
description Carbon nanotubes (CNTs) were amine-functionalized through treatments in inductively coupled post-discharge, capacitively coupled micro spark and pulsed micro arc/glow discharge plasma regions, using urea in solid state as functionalization agent. In each plasma mode, the CNT functionalization yield was evaluated according to the variation of the plasma power and treatment time. For that, the samples were characterized through Fourier-transform infrared spectroscopy, Raman spectroscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The results show that, while preserving the integrity of the CNTs, an 80 % increase in oxygen content and up to 1.2 at.% of nitrogen was achieved using an asymmetric bipolar plasma power supply (ABiPPS). The adsorbed water can be completely removed from the CNTs through both a high-plasma-density treatment and a methanol washing procedure, conducted before sample characterization to remove any unreacted urea.
publishDate 2022
dc.date.none.fl_str_mv 2022-05-01T12:40:46Z
2022-05-01T12:40:46Z
2022-05-01
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.uri.fl_str_mv http://dx.doi.org/10.1016/j.apsusc.2022.152493
Applied Surface Science, v. 583.
0169-4332
http://hdl.handle.net/11449/234027
10.1016/j.apsusc.2022.152493
2-s2.0-85123029914
url http://dx.doi.org/10.1016/j.apsusc.2022.152493
http://hdl.handle.net/11449/234027
identifier_str_mv Applied Surface Science, v. 583.
0169-4332
10.1016/j.apsusc.2022.152493
2-s2.0-85123029914
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Applied Surface Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129326405648384

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