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

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...

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Detalles Bibliográficos
Autores principales:	Barraqué, Facundo, Montes, María Luciana, Fernández, Mariela Alejandra, Mercader, Roberto C., Candal, Roberto J., Torres Sánchez, Rosa María
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2018
Materias:	Ciencias Naturales Magnetic composite synthesis Magnetite Montmorillonite Organo-montmorillonite cobalt sorption
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/80952
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-80952
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Naturales Magnetic composite synthesis Magnetite Montmorillonite Organo-montmorillonite cobalt sorption
spellingShingle	Ciencias Naturales Magnetic composite synthesis Magnetite Montmorillonite Organo-montmorillonite cobalt sorption Barraqué, Facundo Montes, María Luciana Fernández, Mariela Alejandra Mercader, Roberto C. Candal, Roberto J. Torres Sánchez, Rosa María Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption
topic_facet	Ciencias Naturales Magnetic composite synthesis Magnetite Montmorillonite Organo-montmorillonite cobalt sorption
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.
format	Articulo Articulo
author	Barraqué, Facundo Montes, María Luciana Fernández, Mariela Alejandra Mercader, Roberto C. Candal, Roberto J. Torres Sánchez, Rosa María
author_facet	Barraqué, Facundo Montes, María Luciana Fernández, Mariela Alejandra Mercader, Roberto C. Candal, Roberto J. Torres Sánchez, Rosa María
author_sort	Barraqué, Facundo
title	Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on 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
publishDate	2018
url	http://sedici.unlp.edu.ar/handle/10915/80952
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Synthesis and characterization of magnetic-montmorillonite and magneticorgano-montmorillonite: Surface sites involved on cobalt sorption

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