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The magnetic iron oxides are classified into three phases known as Magnetite (Fe 3 O 4 ), Magnetite (-Fe 2 O 3 ), Hematite (-Fe 2 O 3 ).The ferric oxide synthesis with the excess of the ferrous oxide nanoparticles was carried out by the co-precipitation method. The precursors Ferric sulphate hydrate and Ferrous sulphate heptahydrate taken in the molar ratio of 1:2 in 100 ml of water and 30 ml of Hydrochloric acid added to initiate precipitation at 90  O C with vigorous stirring the ammonia solution was added. The prepared materials are characterized by XRD, and UV-Vis spectroscopy. The XRD showed formation of phase and crystallization of the nanomaterial is prepared. The UV-Vis spectroscopy used to determine the reflectance and absorptance as well as the optical bandgap of the nanomaterial, in the range of 800 nm to 200 nm. The analysis indicated formation of ferrous oxide impregnated ferric oxide nanoparticles with desired optical band gap.

ONE POT POLYOL SYNTHESIS OF Fe2O3-Fe3O4 NANO COMPOSITES AND THEIR STRUCTURAL, OPTICAL, PROPERTY STUDIES