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MICROWAVE PREPARATION, CHARACTERISATION AND STUDIES OF NANOSIZED COBALT OXIDE

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Author(s): ANILKUMAR KODGE | SANGSHETTY KALYANI | ARUNKUMAR LAGASHETTY

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 3;
Issue: 8;
Start page: 6380;
Date: 2011;
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Keywords: Microwave | Thermal decomposition | Crystallite size | Density | fuel

ABSTRACT
Properties and applications of nano materials depend on the history of the preparative techniques. A simple energy efficient microwave technique is used for the synthesis of materials at nano dimension. Present work reports, the microwave preparation of nanosized Co3O4 by thermal decomposition of cobalt oxalate precursor employing polyvinyl alcohol as a fuel. The structure of as synthesised Co3O4 is characterised by X-ray diffraction (XRD), bonding by Fourier transfer infrared (FTIR), morphology and particle size by Scanning Electron Microscope (SEM) and Transmission electron microscope (TEM) tools. d c conductivity and magnetic behaviour of the Co3O4 is well studied. Crystallite sizes and density measurement of the sample is under taken. The crystallite sizes were calculated using X-ray line broadening and density measurements were under taken by various methods. TEM study shows that, irregular shaped particles are in the nano range. XRD pattern shows the formation of crystalline cubic phase Co3O4. The metal –oxygen (Co-O) bond formation was confirmed byFTIR study. The prepared sample shows conducting and magnetic behaviour.
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