Synthesis and characterization of amine-functionalized magnetic silica nanoparticle

Pattnaik, Anjana (2011) Synthesis and characterization of amine-functionalized magnetic silica nanoparticle. MSc thesis.



In present work, we prepared Magnetite nanoparticles (MNPs) by coprecipitation of Fe2+ and Fe3+, subsequently these magnetite core particles were coated with silica using tetra ethyl ortho silicate (TEOS). Then surface of silica coated magnetite nanoparticles was functionalized with aminopropyl groups using 3-aminopropyl trimethoxy silane (APTS) as a silylating agent. The morphology of the silica coated magnetite particles was observed to be spherical from SEM images. The hydrodynamic size was found to be 232 nm by dynamic light scattering. The cubic spinel structure for the magnetite nanoparticles were identified by X-ray diffraction studies. FTIR analysis shows that –NH2 groups have been incorporated onto the surface of the magnetite nanoparticles by Fe-O-Si chemical bonds.

Item Type:Thesis ( MSc)
Uncontrolled Keywords:magnetic nanoparticle, silylating agent, silica, Fe3O4, APTS.
Subjects:Chemistry > Inorganic Chemistry
Divisions: Sciences > Department of Chemistry
ID Code:2113
Deposited By:Ms anjana pattnaik
Deposited On:18 May 2011 09:05
Last Modified:18 May 2011 09:05
Supervisor(s):Mahapatra, S

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