Synthesis and characterization of magnetic nanocomposites and their applications study /

• Autores: Changyong Lu
• Directores de la Tesis: Susagna Ricart Miró (dir. tes.), Josep Ros i Badosa (dir. tes.)
• Lectura: En la Universitat Autònoma de Barcelona ( España ) en 2017
• Idioma: español
• Tribunal Calificador de la Tesis: J. L. Bourdelande (presid.), Eduardo Solano Minuesa (secret.), Alberto Calleja Lázaro (voc.)
• Programa de doctorado: Programa de Doctorado en Ciencia de Materiales por la Universidad Autónoma de Barcelona
• Enlaces
  • Tesis en acceso abierto en: DDD
• Resumen

  • Nanomaterials especially nanoparticles become one of the most attractive area not only in scientific research but also in industrial applications. In this thesis, the preparation of magnetite nanoparticles, their related nanocomposites and the application of those obtained nanomaterials have been studied.

    The Fe3O4@SiO2 core-shell nanoparticles were synthesized via normal and microwave assistance reverse microemulsion methods. The obtained nanoparticles were fully characterized with different laboratory techniques and the effect of reaction parameters on final products was also studied. These nanoparticles were used as a support of Ag catalysts nanoparticles and the as synthesized nanocomposites shown nice catalytic property and high recyclability.

    A novel Fe3O4@GNF@SiO2 nanocapsulates were also prepared via in situ formation of magnetite nanoparticles and silica coverage process. The obtained nanocapsulates have nice stabilities even in the acid environments. The potential application of these nanocapsulates in magnetic resonance imaging research was also studied.

    On the other hand, the cytotoxity and interaction with cell of Fe3O4@SiO2 core-shell nanoparticles were studied which indicate the possibility of using them in biomedical research. Then, the Fe3O4@SiO2 core-shell nanoparticles were further decorated with biomolecules such as MC540 and L-thyroxine. The Fe3O4@SiO2 core-shell nanoparticles with the surface functionalized with molecule imprinted polymers also suggested the potential application in biosensor research.