Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption

Autores
Barraqué, Facundo; Montes, María Luciana; Fernández, Mariela Alejandra; Mercader, Roberto C.; Candal, Roberto J.; Torres Sánchez, Rosa María
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Montmorillonite magnetic-clay nanoparticles (MtMag) and its exchanged product with hexadecyltrimethylammonium (O100MtMag) were synthetized by alkaline oxidation of ferrous sulfate, characterized by diverse techniques (XRD, Mössbauer spectroscopy, VSM, SEM, Zeta Potential, total specific surface area, TOC) and used as Co2+ sorbents. The magnetic characteristic of these materials allows them to be used in cases of decontamination of water polluted with dangerous materials, such as radioactive ones, reducing the risk to health due to indirect manipulation by means of external magnetic fields. For comparison, samples without magnetic material (O100Mt) and in absence of clay (Mag) were also synthetized. The synthesis of magnetic materials disclosed the presence of magnetite and goethite nanoparticles, while the saturation magnetization displayed by O100MtMag was higher than that obtained for MtMag, indicating the existence of a higher amount of magnetite particles in the first one. This suggests that O100MtMag could be manipulated easier than MtMag through external magnetic fields. Moreover, the surface electric charge of MtMag sample can be described as a mixture of Magnetite and montmorillonite, with ratios related to the surface of both components. Co2+ sorption percentages, using an initial Co2+ concentration of 85 mg/L, resulted similar for the different materials while the Co2+ sorption was ascribed to interactions with the montmorillonite interlayer and external surface. The current results indicate that O100MtMag is a more appropriate material than MtMag for Co2+ removal by external magnets.
Facultad de Ciencias Naturales y Museo (FCNM)
Facultad de Ciencias Exactas
Materia
Ciencias Naturales
Magnetic composite synthesis
Magnetite
Montmorillonite
Organo-montmorillonite cobalt sorption
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/80952
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/80952
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorptionBarraqué, FacundoMontes, María LucianaFernández, Mariela AlejandraMercader, Roberto C.Candal, Roberto J.Torres Sánchez, Rosa MaríaCiencias NaturalesMagnetic composite synthesisMagnetiteMontmorilloniteOrgano-montmorillonite cobalt sorptionMontmorillonite magnetic-clay nanoparticles (MtMag) and its exchanged product with hexadecyltrimethylammonium (O100MtMag) were synthetized by alkaline oxidation of ferrous sulfate, characterized by diverse techniques (XRD, Mössbauer spectroscopy, VSM, SEM, Zeta Potential, total specific surface area, TOC) and used as Co2+ sorbents. The magnetic characteristic of these materials allows them to be used in cases of decontamination of water polluted with dangerous materials, such as radioactive ones, reducing the risk to health due to indirect manipulation by means of external magnetic fields. For comparison, samples without magnetic material (O100Mt) and in absence of clay (Mag) were also synthetized. The synthesis of magnetic materials disclosed the presence of magnetite and goethite nanoparticles, while the saturation magnetization displayed by O100MtMag was higher than that obtained for MtMag, indicating the existence of a higher amount of magnetite particles in the first one. This suggests that O100MtMag could be manipulated easier than MtMag through external magnetic fields. Moreover, the surface electric charge of MtMag sample can be described as a mixture of Magnetite and montmorillonite, with ratios related to the surface of both components. Co2+ sorption percentages, using an initial Co2+ concentration of 85 mg/L, resulted similar for the different materials while the Co2+ sorption was ascribed to interactions with the montmorillonite interlayer and external surface. The current results indicate that O100MtMag is a more appropriate material than MtMag for Co2+ removal by external magnets.Facultad de Ciencias Naturales y Museo (FCNM)Facultad de Ciencias Exactas2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf375-384http://sedici.unlp.edu.ar/handle/10915/80952enginfo:eu-repo/semantics/altIdentifier/issn/0304-8853info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmmm.2018.07.052info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:47:13Zoai:sedici.unlp.edu.ar:10915/80952Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:47:14.179SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
title Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
spellingShingle Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
Barraqué, Facundo
Ciencias Naturales
Magnetic composite synthesis
Magnetite
Montmorillonite
Organo-montmorillonite cobalt sorption
title_short Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
title_full Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
title_fullStr Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
title_full_unstemmed Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
title_sort Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
dc.creator.none.fl_str_mv Barraqué, Facundo
Montes, María Luciana
Fernández, Mariela Alejandra
Mercader, Roberto C.
Candal, Roberto J.
Torres Sánchez, Rosa María
author Barraqué, Facundo
author_facet Barraqué, Facundo
Montes, María Luciana
Fernández, Mariela Alejandra
Mercader, Roberto C.
Candal, Roberto J.
Torres Sánchez, Rosa María
author_role author
author2 Montes, María Luciana
Fernández, Mariela Alejandra
Mercader, Roberto C.
Candal, Roberto J.
Torres Sánchez, Rosa María
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Magnetic composite synthesis
Magnetite
Montmorillonite
Organo-montmorillonite cobalt sorption
topic Ciencias Naturales
Magnetic composite synthesis
Magnetite
Montmorillonite
Organo-montmorillonite cobalt sorption
dc.description.none.fl_txt_mv Montmorillonite magnetic-clay nanoparticles (MtMag) and its exchanged product with hexadecyltrimethylammonium (O100MtMag) were synthetized by alkaline oxidation of ferrous sulfate, characterized by diverse techniques (XRD, Mössbauer spectroscopy, VSM, SEM, Zeta Potential, total specific surface area, TOC) and used as Co2+ sorbents. The magnetic characteristic of these materials allows them to be used in cases of decontamination of water polluted with dangerous materials, such as radioactive ones, reducing the risk to health due to indirect manipulation by means of external magnetic fields. For comparison, samples without magnetic material (O100Mt) and in absence of clay (Mag) were also synthetized. The synthesis of magnetic materials disclosed the presence of magnetite and goethite nanoparticles, while the saturation magnetization displayed by O100MtMag was higher than that obtained for MtMag, indicating the existence of a higher amount of magnetite particles in the first one. This suggests that O100MtMag could be manipulated easier than MtMag through external magnetic fields. Moreover, the surface electric charge of MtMag sample can be described as a mixture of Magnetite and montmorillonite, with ratios related to the surface of both components. Co2+ sorption percentages, using an initial Co2+ concentration of 85 mg/L, resulted similar for the different materials while the Co2+ sorption was ascribed to interactions with the montmorillonite interlayer and external surface. The current results indicate that O100MtMag is a more appropriate material than MtMag for Co2+ removal by external magnets.
Facultad de Ciencias Naturales y Museo (FCNM)
Facultad de Ciencias Exactas
description Montmorillonite magnetic-clay nanoparticles (MtMag) and its exchanged product with hexadecyltrimethylammonium (O100MtMag) were synthetized by alkaline oxidation of ferrous sulfate, characterized by diverse techniques (XRD, Mössbauer spectroscopy, VSM, SEM, Zeta Potential, total specific surface area, TOC) and used as Co2+ sorbents. The magnetic characteristic of these materials allows them to be used in cases of decontamination of water polluted with dangerous materials, such as radioactive ones, reducing the risk to health due to indirect manipulation by means of external magnetic fields. For comparison, samples without magnetic material (O100Mt) and in absence of clay (Mag) were also synthetized. The synthesis of magnetic materials disclosed the presence of magnetite and goethite nanoparticles, while the saturation magnetization displayed by O100MtMag was higher than that obtained for MtMag, indicating the existence of a higher amount of magnetite particles in the first one. This suggests that O100MtMag could be manipulated easier than MtMag through external magnetic fields. Moreover, the surface electric charge of MtMag sample can be described as a mixture of Magnetite and montmorillonite, with ratios related to the surface of both components. Co2+ sorption percentages, using an initial Co2+ concentration of 85 mg/L, resulted similar for the different materials while the Co2+ sorption was ascribed to interactions with the montmorillonite interlayer and external surface. The current results indicate that O100MtMag is a more appropriate material than MtMag for Co2+ removal by external magnets.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/80952
url http://sedici.unlp.edu.ar/handle/10915/80952
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0304-8853
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmmm.2018.07.052
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
375-384
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.13397

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