Publication: Preparación y estudio de nanocomposites magnéticos con diferente potencial de empleo
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2018-09-12
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Universidad Complutense de Madrid
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Abstract
A día de hoy, el estudio de nanocomposites magnéticos se presenta como una línea deinvestigación bastante atractiva, considerando las particulares propiedades de losmateriales obtenidos a escala nanométrica y sus diferentes aplicaciones.Generalmente, las nanopartículas magnéticas de fórmula general MFe2O4 con M = Fe2+,Co2+ y Ni2+ muestran comportamientos magnéticos diferentes en función del catióninvolucrado en la composición y del tamaño de partícula que conforma estas muestras.Un tamaño de partícula dentro del rango nanométrico genera el comportamientosuperparamagnético de algunas muestras, permitiendo la modulación de su respuestaante la presencia o ausencia de un campo magnético externo y, por consiguiente, suposible aplicación en biomedicina, (marcadores en resonancia magnética de imagen, entratamientos de liberación controlada de fármacos, hipertermia magnética, etc.) o enQuímica del medio ambiente.La tesis que se presenta se encuentra estructurada en tres partes y en ella se describe lasíntesis de núcleos de composición MFe2O4 con M = Fe2+, Co2+ o Ni2+ y surecubrimiento con cortezas diferentes (cortezas poliméricas biocompatibles y SiO2-APTES) para la obtención de nanocomposites magnéticos. Los primeros con ampliopotencial de aplicación en biomedicina y los segundos para su empleo como membranasadsorbentes de metales pesados...
Nowadays, the study of magnetic nanocomposites is presented as an attractive researchtopic, considering the particular properties of materials obtained at nanometric scale andtheir different applications.In general, magnetic nanoparticles of general formula MFe2O4 with M = Fe2+, Co2+ andNi2+ show different magnetic behaviors depending on the cation involved in thecomposition and the particle size of these samples. A particle size within the nanometricrange generates the superparamagnetic behavior of some samples, allowing themodulation of its response in presence or absence of an external magnetic field and,consequently, its possible their application in biomedicine (magnetic resonance imagingmarkers, controlled drug release treatments, magnetic hyperthermia, etc.) or inenvironmental chemistry.The thesis structured in three parts describes the synthesis of cores MFe2O4 compositionwith M = Fe2+, Co2+ or Ni2+ and their coating with different shells (biocompatiblepolymeric shells and SiO2-APTES) to obtain the corresponding magneticnanocomposites. The first type of shells possesses a great potential of application inbiomedicine and the second ones, can be used as adsorbent membranes of heavy metals...
Nowadays, the study of magnetic nanocomposites is presented as an attractive researchtopic, considering the particular properties of materials obtained at nanometric scale andtheir different applications.In general, magnetic nanoparticles of general formula MFe2O4 with M = Fe2+, Co2+ andNi2+ show different magnetic behaviors depending on the cation involved in thecomposition and the particle size of these samples. A particle size within the nanometricrange generates the superparamagnetic behavior of some samples, allowing themodulation of its response in presence or absence of an external magnetic field and,consequently, its possible their application in biomedicine (magnetic resonance imagingmarkers, controlled drug release treatments, magnetic hyperthermia, etc.) or inenvironmental chemistry.The thesis structured in three parts describes the synthesis of cores MFe2O4 compositionwith M = Fe2+, Co2+ or Ni2+ and their coating with different shells (biocompatiblepolymeric shells and SiO2-APTES) to obtain the corresponding magneticnanocomposites. The first type of shells possesses a great potential of application inbiomedicine and the second ones, can be used as adsorbent membranes of heavy metals...
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Tesis de la Universidad Complutense de Madrid, Facultad de Ciencias Químicas, Departamento de Química Inorgánica I, leída el 13-02-2017