The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes

Carbon nanotubes (CNTs), owing to their high surface area-to-volume ratio and hollow core, can be employed as hosts for adsorbed and/or encapsulated molecules. At high temperatures, the ends of CNTs close spontaneously, which is relevant for several applications, including catalysis, gas storage, an...

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Autores: Kierkowicz, Magdalena, Pach, Elzbieta|||0000-0001-9587-3768, Fraile, Julio|||0000-0003-2961-7920, Domingo, Concepción|||0000-0001-7857-2760, Ballesteros, Belén|||0000-0002-1958-8911, Tobias, Gerard|||0000-0001-7116-2152
Tipo de recurso: artículo
Fecha de publicación:2021
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:264919
Acceso en línea:https://ddd.uab.cat/record/264919
https://dx.doi.org/urn:doi:10.3390/nano11123365
Access Level:acceso abierto
Palabra clave:Carbon nanocapsules
Filled carbon nanotubes
End-closing
Encapsulation
Sealing
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spelling The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon NanotubesKierkowicz, MagdalenaPach, Elzbieta|||0000-0001-9587-3768Fraile, Julio|||0000-0003-2961-7920Domingo, Concepción|||0000-0001-7857-2760Ballesteros, Belén|||0000-0002-1958-8911Tobias, Gerard|||0000-0001-7116-2152Carbon nanocapsulesFilled carbon nanotubesEnd-closingEncapsulationSealingCarbon nanotubes (CNTs), owing to their high surface area-to-volume ratio and hollow core, can be employed as hosts for adsorbed and/or encapsulated molecules. At high temperatures, the ends of CNTs close spontaneously, which is relevant for several applications, including catalysis, gas storage, and biomedical imaging and therapy. This study highlights the influence of the annealing temperature in the range between 400 and 1100 °C on the structure and morphology of single-walled CNTs. The nitrogen adsorption and density functional theory calculations indicate that the fraction of end-closed CNTs increases with temperature. Raman spectroscopy reveals that the thermal treatment does not alter the tubular structure. Insight is also provided into the efficacy of CNTs filling from the molten phase, depending on the annealing temperature. The CNTs are filled with europium (III) chloride and analyzed by using electron microscopy (scanning electron microscopy and high-resolution transmission electron microscopy) and energy-dispersive X-ray spectroscopy, confirming the presence of filling and closed ends. The filling yield increases with temperature, as determined by thermogravimetric analysis. The obtained results show that the apparent surface area of CNTs, fraction of closed ends, and amount of encapsulated payload can be tailored via annealing. 22021-01-0120212021-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/264919https://dx.doi.org/urn:doi:10.3390/nano11123365reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengAgencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-113805GB-I00Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-115631GB-I00European Commission https://doi.org/10.13039/501100000780 290023Ministerio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CEX2019-000917-SMinisterio de Ciencia e Innovación https://doi.org/10.13039/501100004837 SEV-2017-0706open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2649192026-06-06T12:50:31Z
dc.title.none.fl_str_mv The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes
title The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes
spellingShingle The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes
Kierkowicz, Magdalena
Carbon nanocapsules
Filled carbon nanotubes
End-closing
Encapsulation
Sealing
title_short The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes
title_full The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes
title_fullStr The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes
title_full_unstemmed The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes
title_sort The Role of Temperature on the Degree of End-Closing and Filling of Single-Walled Carbon Nanotubes
dc.creator.none.fl_str_mv Kierkowicz, Magdalena
Pach, Elzbieta|||0000-0001-9587-3768
Fraile, Julio|||0000-0003-2961-7920
Domingo, Concepción|||0000-0001-7857-2760
Ballesteros, Belén|||0000-0002-1958-8911
Tobias, Gerard|||0000-0001-7116-2152
author Kierkowicz, Magdalena
author_facet Kierkowicz, Magdalena
Pach, Elzbieta|||0000-0001-9587-3768
Fraile, Julio|||0000-0003-2961-7920
Domingo, Concepción|||0000-0001-7857-2760
Ballesteros, Belén|||0000-0002-1958-8911
Tobias, Gerard|||0000-0001-7116-2152
author_role author
author2 Pach, Elzbieta|||0000-0001-9587-3768
Fraile, Julio|||0000-0003-2961-7920
Domingo, Concepción|||0000-0001-7857-2760
Ballesteros, Belén|||0000-0002-1958-8911
Tobias, Gerard|||0000-0001-7116-2152
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Carbon nanocapsules
Filled carbon nanotubes
End-closing
Encapsulation
Sealing
topic Carbon nanocapsules
Filled carbon nanotubes
End-closing
Encapsulation
Sealing
description Carbon nanotubes (CNTs), owing to their high surface area-to-volume ratio and hollow core, can be employed as hosts for adsorbed and/or encapsulated molecules. At high temperatures, the ends of CNTs close spontaneously, which is relevant for several applications, including catalysis, gas storage, and biomedical imaging and therapy. This study highlights the influence of the annealing temperature in the range between 400 and 1100 °C on the structure and morphology of single-walled CNTs. The nitrogen adsorption and density functional theory calculations indicate that the fraction of end-closed CNTs increases with temperature. Raman spectroscopy reveals that the thermal treatment does not alter the tubular structure. Insight is also provided into the efficacy of CNTs filling from the molten phase, depending on the annealing temperature. The CNTs are filled with europium (III) chloride and analyzed by using electron microscopy (scanning electron microscopy and high-resolution transmission electron microscopy) and energy-dispersive X-ray spectroscopy, confirming the presence of filling and closed ends. The filling yield increases with temperature, as determined by thermogravimetric analysis. The obtained results show that the apparent surface area of CNTs, fraction of closed ends, and amount of encapsulated payload can be tailored via annealing.
publishDate 2021
dc.date.none.fl_str_mv 2
2021-01-01
2021
2021-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/264919
https://dx.doi.org/urn:doi:10.3390/nano11123365
url https://ddd.uab.cat/record/264919
https://dx.doi.org/urn:doi:10.3390/nano11123365
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-113805GB-I00
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 PID2020-115631GB-I00
European Commission https://doi.org/10.13039/501100000780 290023
Ministerio de Ciencia e Innovación https://doi.org/10.13039/501100004837 CEX2019-000917-S
Ministerio de Ciencia e Innovación https://doi.org/10.13039/501100004837 SEV-2017-0706
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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