Fe-C nanoparticles obtained from thermal decomposition employing sugars as reducing agents
Fecha
2020Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
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10.1016/j.jallcom.2020.158065
Resumen
The aim of the work is to present a comparative analysis (structural and magnetic) of Fe-C nanocomposites obtained by the thermal decomposition of sugars (fructose, glucose and sucrose) employing FeCl3 as Fe3+ precursor. The thermal decomposition was followed through Thermogravimetry (TGA) and Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction, High Resolution Transmission Electron ...
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The aim of the work is to present a comparative analysis (structural and magnetic) of Fe-C nanocomposites obtained by the thermal decomposition of sugars (fructose, glucose and sucrose) employing FeCl3 as Fe3+ precursor. The thermal decomposition was followed through Thermogravimetry (TGA) and Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction, High Resolution Transmission Electron Microscopy (HRTEM) and Raman spectroscopy. The results indicate the reduction of Fe3+ under the performed thermal treatments and the achievement at high annealing temperatures of Fe-C nanostructures (coexistence of α-Fe and Fe3C nanoparticles surrounded by a carbon matrix). The magnetic characterization performed by dc SQUID magnetometry, shows an antiferromagnetic response in the initial stages of the decomposition process, and a ferromagnetic behavior linked to the Fe-based nanoparticles. The magnetic induction heating was analyzed through the ac hysteresis loops. Moderate Specific Absorption Rate (SAR) is obtained in Fe-C nanoparticles (~ 70 W/gFe), ascribed to the large nanoparticle size. The combination of porous carbon structure and ferromagnetic response of the Fe-C nanoparticles (i.e. local temperature increase under ac magnetic field) enlarge the emerging applications of these carbonaceous nanocomposites. [--]
Materias
Carbonaceous,
Cementite,
Magnetic induction heating,
Magnetic nanoparticles
Editor
Elsevier
Publicado en
Journal of Alloys and Compounds 863 (2021) 158065
Departamento
Universidad Pública de Navarra. Departamento de Ciencias /
Nafarroako Unibertsitate Publikoa. Zientziak Saila /
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute for Advanced Materials and Mathematics - INAMAT2
Versión del editor
Entidades Financiadoras
The work has been performed within the framework of the project Nueva generación de plataformas teragnósticas contra el cancer asistidas por partículas superparamagnéticas-DRUGMAG, finantially supported by the Gobierno de Navarra, Departamento de Desarrollo Económico (Spain). This work was also supported by institutional founding from Universidad Pública de Navarra under the project 'Caracterización magnética de nanopartículas para la asistencia de plataformas teragnósticas contra el cáncer' (reference IT-443-10). L. Cervera acknowledges Public University of Navarre for her Ph.D contract 'Contratos Pre-doctorales adscritos a Grupos e Institutos de Investigación de la Universidad Pública de Navarra'.