Preparation And Property Studies Of Composite Nanomaterials Based On Fe₃O₄/C Nanostructure

With the development of nanoscience and nanotechnology,a transformation is taking place in which nanomaterials with simple structure and single component are becoming to the ones which possess complex structure,specific performance and multifunctional properties.Fe₃O₄ nanomaterial is a kind of typical nanomaterial among numerous metal oxide materials.Due to its excellent magnetic and other unique properties as a kind of nanoscaled materials,Fe₃O₄ nanomaterial has received extensive interests.In recent years,Fe₃O₄-based nanoparticles with various different functionalities have been fabricated by incorporating,encapsulating and assembling diverse functional materials?such as transition metal oxides,semiconductor oxides,carbon-based nanomaterials and functional polymer?and have showed promising applications in bio-medicine,catalysis,electrode materials,sensing,and so on.This paper presents a facile process to prepare Fe₃O₄/Gd2O3/C composite nanomaterials via a template method.The as-obtained Fe₃O₄/Gd2O3/C nanoparticle which combine excellent magnetic response,effective photo-thermal effect and good biocompation can be used in T1-T2 dual magnetic resonance imaging and NIR laser mediated photo-thermal therapy.Moreover,Fe₃O₄/SnO2/N-C spindle-shaped nanoparticles,with novel morphology,unique structure and good dispersibility,were synthesized using high-temperature hydrolysis method.The electrochemical performances were tested,and the results indicated that the Fe₃O₄/SnO2/N-C spindle-shaped nanoparticles have good rate capability anode materials in lithium-ion batteries.