Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , |
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=S1516-14392021000600205 |
Resumo: | Abstract Freezing of cobalt nitrate hexahydrate (CoNHH) under a static magnetic field was studied at three different magnetic field intensities. The results show that the magnetic field has a significant effect when the sample enters the solid phase and reduces the stochastic behaviour of the nucleation. Thermal properties investigated using thermogravimetric and differential thermal analysis revealed the shift to a lower temperature for the onset of decomposition and melting temperature after the freeze-thaw in a magnetic field. Besides that, we observed a significant change in the FT-IR peaks that might indicate the emergence of cobalt nitrate with a lower hydrate number, a phase separation effect, and the evaporation of NO3- ions. Refinement of the XRD spectra shows a single phase of CoNHH with a slight lattice parameter change after the freezing-thawing in a magnetic field. The freezing behaviour of CoNHH was compared to that observed previously for water, a salt solution, and an ethylene glycol solution. We investigated the relationship of the freezing behaviour with hydrogen bonding and magnetic properties and its impact on the change in the Gibbs free energy. The results of this study are important to optimise the performance of CoNHH as latent thermal energy storage. |
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Materials research (São Carlos. Online) |
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|
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Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate HexahydrateCobalt Nitrate Hexahydrate Co(NO3)2‧6H2ONucleationSupercooling DegreeStatic Magnetic FieldAbstract Freezing of cobalt nitrate hexahydrate (CoNHH) under a static magnetic field was studied at three different magnetic field intensities. The results show that the magnetic field has a significant effect when the sample enters the solid phase and reduces the stochastic behaviour of the nucleation. Thermal properties investigated using thermogravimetric and differential thermal analysis revealed the shift to a lower temperature for the onset of decomposition and melting temperature after the freeze-thaw in a magnetic field. Besides that, we observed a significant change in the FT-IR peaks that might indicate the emergence of cobalt nitrate with a lower hydrate number, a phase separation effect, and the evaporation of NO3- ions. Refinement of the XRD spectra shows a single phase of CoNHH with a slight lattice parameter change after the freezing-thawing in a magnetic field. The freezing behaviour of CoNHH was compared to that observed previously for water, a salt solution, and an ethylene glycol solution. We investigated the relationship of the freezing behaviour with hydrogen bonding and magnetic properties and its impact on the change in the Gibbs free energy. The results of this study are important to optimise the performance of CoNHH as latent thermal energy storage.ABM, ABC, ABPol2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600205Materials Research v.24 n.6 2021reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2021-0088info:eu-repo/semantics/openAccessRahman,AnnisaYusuf,AkhmadPutri,Risky AfandiAnggraini,YunitaPujaningsih,Febri BerthalitaKurnia,DanielWonorahardjo,SurjamantoSutjahja,Inge Magdalenaeng2021-09-13T00:00:00Zoai:scielo:S1516-14392021000600205Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2021-09-13T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate |
title |
Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate |
spellingShingle |
Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate Rahman,Annisa Cobalt Nitrate Hexahydrate Co(NO3)2‧6H2O Nucleation Supercooling Degree Static Magnetic Field |
title_short |
Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate |
title_full |
Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate |
title_fullStr |
Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate |
title_full_unstemmed |
Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate |
title_sort |
Effect of Static Magnetic Field on Nucleation of Cobalt Nitrate Hexahydrate |
author |
Rahman,Annisa |
author_facet |
Rahman,Annisa Yusuf,Akhmad Putri,Risky Afandi Anggraini,Yunita Pujaningsih,Febri Berthalita Kurnia,Daniel Wonorahardjo,Surjamanto Sutjahja,Inge Magdalena |
author_role |
author |
author2 |
Yusuf,Akhmad Putri,Risky Afandi Anggraini,Yunita Pujaningsih,Febri Berthalita Kurnia,Daniel Wonorahardjo,Surjamanto Sutjahja,Inge Magdalena |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Rahman,Annisa Yusuf,Akhmad Putri,Risky Afandi Anggraini,Yunita Pujaningsih,Febri Berthalita Kurnia,Daniel Wonorahardjo,Surjamanto Sutjahja,Inge Magdalena |
dc.subject.por.fl_str_mv |
Cobalt Nitrate Hexahydrate Co(NO3)2‧6H2O Nucleation Supercooling Degree Static Magnetic Field |
topic |
Cobalt Nitrate Hexahydrate Co(NO3)2‧6H2O Nucleation Supercooling Degree Static Magnetic Field |
description |
Abstract Freezing of cobalt nitrate hexahydrate (CoNHH) under a static magnetic field was studied at three different magnetic field intensities. The results show that the magnetic field has a significant effect when the sample enters the solid phase and reduces the stochastic behaviour of the nucleation. Thermal properties investigated using thermogravimetric and differential thermal analysis revealed the shift to a lower temperature for the onset of decomposition and melting temperature after the freeze-thaw in a magnetic field. Besides that, we observed a significant change in the FT-IR peaks that might indicate the emergence of cobalt nitrate with a lower hydrate number, a phase separation effect, and the evaporation of NO3- ions. Refinement of the XRD spectra shows a single phase of CoNHH with a slight lattice parameter change after the freezing-thawing in a magnetic field. The freezing behaviour of CoNHH was compared to that observed previously for water, a salt solution, and an ethylene glycol solution. We investigated the relationship of the freezing behaviour with hydrogen bonding and magnetic properties and its impact on the change in the Gibbs free energy. The results of this study are important to optimise the performance of CoNHH as latent thermal energy storage. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 |
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=S1516-14392021000600205 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392021000600205 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2021-0088 |
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.24 n.6 2021 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 |
_version_ |
1754212679479721984 |