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Preparation and Characterization of Fe3O4Nanoparticles

Author: LiuBing
Tutor: JiangFuYi
School: Yantai University
Course: Materials Science
Keywords: Fe3O4Nanoparticles Solvothermal method Magnetic properties
CLC: TQ138.11
Type: Master's thesis
Year: 2013
Downloads: 191
Quote: 0
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Abstract


Compared with the corresponding bulk materials, nano-sized magnetic particleshave different physical and chemical characteristics. People carried out extensive andin-depth study on these characteristics. Due to their surface effect, superparamagnetism,biocompatibility, Fe3O4nanoparticles have a wide application in magnetic storagematerials, magnetic fluids, catalysis, biomedicine materials and radar absorbing materials,etc. The properties of Fe3O4nanoparticles depend strongly on their dimensions. Uniformsize make each particle has same physical and chemical properties. Therefore, thepreparation of Fe3O4nanoparticles with uniform size and morphology has importantsignificance. In this paper, corprecipitaion and solvothermal method were used tosynthesis Fe3O4nanoparticles. Fe3O4nanoparticles were synthesized by the thermaldecomposition of FeOOH with oleic acid as surfactant and1-octadecene as solvent. Thetransmission electron microscopy （TEM）, X-ray powder diffraction （XRD）, andmagnetization measurement were used to characterize the morphology, structure, andmagnetic properties of the as-prepared nanoparticles. The influence of oleic acid andFeCl3content, reaction time on the size, morphology and magnetic properties of Fe3O4nanocrystals were studied. The results demonstrate that both the prolonging of reactionduration and the increasing of FeCl3content can increase the diameter of magnetiteparticles. By increase the oleic acid from13.5ml to20ml, the particle diameter firstdecrease and then increase. Monodisperse Fe3O4nanoparticles with uniform size werealso prepared by coprecipitation methods with oleic acid as surfactant and aging at180℃for16h.

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CLC: > Industrial Technology > Chemical Industry > Inorganic compounds, the chemical industry of the metal elements > Inorganic compounds of the first the Ⅷ family metal elements > Inorganic compounds of iron elements > Inorganic compounds of iron
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