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dc.contributor.author
Briceño, Sarah  
dc.contributor.author
Suárez Fernandez, Jorge Luis  
dc.contributor.author
Gonzalez, Gema  
dc.date.available
2017-12-07T20:55:07Z  
dc.date.issued
2017-04  
dc.identifier.citation
Briceño, Sarah; Suárez Fernandez, Jorge Luis; Gonzalez, Gema; Solvothermal synthesis of cobalt ferrite hollow spheres with chitosan; Elsevier; Materials Science and Engineering: C; 78; 4-2017; 842-846  
dc.identifier.issn
0928-4931  
dc.identifier.uri
http://hdl.handle.net/11336/30029  
dc.description.abstract
Cobalt ferrite hollow spheres with chitosan (CoFe2O4/CS) were synthesized by two different approaches using the solvothermal method. The first approach involves in-situ incorporation of FeCl3:6H2O and CoNO3:6H2O in the solvothermal reaction (M1) and in second approach already prepared CoFe2O4 nanoparticles (NPs) using the thermal decomposition method was placed in the solvothermal reaction to form the hollow spheres (M2). Structural identification of the samples were characterized by Fourier transform infrared spectra (FTIR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analyses (DSC-TGA) and energy dispersive X-ray spectroscopy (EDX). The magnetic properties were evaluated using a vibrating sample magnetometer (VSM). The presence of chitosan on the hollow sphere was confirmed by FTIR. The XRD analyses proved that the synthesized samples were cobalt ferrite with spinel structure. The structure of the surface and the average particle size of the spheres were observed by SEM and TEM showing the nano scale of the CoFe2O4 component. Structural characterization demonstrating that chitosan does not affect the crystallinity, chemical composition, and magnetic properties of the CoFe2O4/CS. This work demonstrates that the CoFe2O4/CS prepared using the as synthesized CoFe2O4 NPs have better structural and magnetic properties.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/  
dc.subject
Chitosan  
dc.subject
Ferrite  
dc.subject
Hollow Sphere  
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Magnetic Properties  
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Nanoparticle  
dc.subject.classification
Recubrimientos y Películas  
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Ingeniería de los Materiales  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Solvothermal synthesis of cobalt ferrite hollow spheres with chitosan  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-10-13T19:55:08Z  
dc.journal.volume
78  
dc.journal.pagination
842-846  
dc.journal.pais
Países Bajos  
dc.description.fil
Fil: Briceño, Sarah. Yachay Technology University; Ecuador. Instituto Venezolano de Investigaciones Científicas; Venezuela  
dc.description.fil
Fil: Suárez Fernandez, Jorge Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Física del Litoral. Universidad Nacional del Litoral. Instituto de Física del Litoral; Argentina. Instituto Venezolano de Investigaciones Científicas; Venezuela  
dc.description.fil
Fil: Gonzalez, Gema. Instituto Venezolano de Investigaciones Científicas; Venezuela. Escuela Politécnica Nacional; Ecuador  
dc.journal.title
Materials Science and Engineering: C  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.msec.2017.04.034  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0928493116316666