Abstract

Nano-sized silver doped Mn₂O₃ was synthesized by starch assisted co-precipitation technique. The prepared samples were tested for CO oxidation reaction. Ag doped Mn₂O₃ sample was found to show higher activity then pristine Mn₂O₃. XRD patterns authenticate the formation of Mn₂O₃ phase. Electron microscopy images show that the particles are in nano-sized, agglomerated and 40 - 70 nm in range. Thermal analysis data indicates the phase change from Mn₂O₃ to Mn₃O₄ beyond 950 °C. Magnetic susceptibility data indicates the paramagnetic nature of these samples. Electrical resistivity measurement shows that these samples are semiconductors.

Keywords: Mn2O3; Ag doped Mn2O3, Co-precipitation, Electron microscopy, Thermal analysis, Carbon monoxide oxidation.