Mn₂O₃ Nanoparticles Synthesized from Thermal Decomposition of Manganese(II) Schiff Base Complexes

Abstract

The Mn2O3 nanoparticles have been prepared using solid state thermal decomposition of MnL 1 and MnL 2 , L 1 = N, N -bis(2-hydroxy-4-methoxybenzophenone)-1,3-propanediamine and L 2 = N, N -bis(2-hydroxy-4-methoxybenzophenone)-1,2-cyclohexanediamine, at 500• C for 3 h and characterized by the Fourier transform infrared spectroscopy, X-ray powder diffraction and scanning electron microscopy. The Fourier transform infrared spectroscopy and X-ray powder diffraction confirm that the formed product at 500• C is Mn2O3. The MnL 1 and MnL 2 complexes were prepared from the one-pot reaction of MnCl2·H2O, diamine and 2-hydroxy-4-methoxybenzophenone and characterized by elemental analyses, the Fourier transform infrared spectroscopy and thermogravimetry.

Modulation of the Morphological Architecture of Mn2O3 Nanoparticles to MnCoO Nanoflakes by Loading Co3+ Via a Co-Precipitation Approach for Mosquitocidal Development

“…Through the thermal annealing from 260 to 280 °C, the weight loss reaches 10% related to the removal of hydroxide molecules. The final weight loss of 2% between the calcination temperature 400 to 500 °C was associated with the formation of pure Mn 2 O 3 [ 38 , 39 ]. The nanoflakes show similar behavior, with higher weight loss between 50 and 400 °C reaching 18% at 500 °C, attributed to the decomposition of water, salt, or hydroxide molecules.…”