Abstract
Siderite is an iron ore in the form of ferrous carbonate (FeCO3). It finds applications in ceramics, in pig iron production, pigments in paints and in petroleum drilling fluids as a scavenger for H2S. An attempt was made to synthesize FeCO3 nano-particles by hydrothermal treatment of aqueous solution of iron sulphate, ascorbic acid, and ammonium carbonate with a molar ratio of 1:1:3, respectively, at 140˚C for 1.5 h. The synthesized powder was further characterized by different characterization techniques like powder XRD, FT-IR and TGA. The powder XRD analysis suggested the nano-crystalline nature of the sample with Hexagonal crystal system having unit cell parameters as: a = 4.691Ǻ, b = 4.691 Ǻ and c = 15.37Ǻ. The average crystallite size was found to be 10.70 nm from Scherrer’s formula. FT-IR spectrum confirmed the presence of O-H, and C-O functional groups. The TGA results suggested that the material started decomposing from the beginning and showed weight loss of 32.4% at 358°C temperature. Thereaft...
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