Synthesis of Magnetite Nanoparticles and Their Applications
Date Issued
2007
Date
2007
Author(s)
Huang, Jing-Hong
DOI
zh-TW
Abstract
In this regard, there has been much interest among the scientists towards the synthesis of multifunctional composite materials using two or more materials e.g. core-shell particles. The core shell nanoparticles have been of great potential in bionanotechnology due to improvement in its biocompatibility and decreased toxicity on account of surface modification of core shell nanomaterials. The prolonged circulation time of inorganic nanomaterials in our body is important task in front of the scientists, which also needs surface modification.
In the present thesis, the syntheses of Fe3O4 (magnetite) nanoparticles were carried out by controlling the reaction time and concentration of ferric cation using high temperature decomposition method. The morphology of nanoparticles was analyzed by transmission electron microscopy (TEM). The magnetic properties were measured by superconducting quantum interference device (SQUID) and X-ray magnetic circular dichrism (XMCD). The crystal structure of nanoparticles was explored by X-ray diffraction (XRD). The composition of nanoparticles were analyzed by thermal gravimetric analysis (TGA) and Infrared spectrum (IR). We have successfully prepared magnetite nanoparticles of different sizes which were then transferred from oil phase to aqueous phase for carrying out cytotoxicity studies on cancer cells. The part of the research also involves synthesis of core-shell Fe3O4@Au nanoparticles to exploit magnetic properties of core and optical properties of shell in diagnostic and hyperthermia of cancer.
Subjects
四氧化三鐵
奈米粒子
magnetite
nanoparticles
SDGs
Type
thesis
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