Synthesis and Characterization of MgCr2O4 Spinel Nanoparticles by Sol gel Method

An eco-friendly synthesis process has been adopted to prepare MgCr2O4 nanopowder from magnesium nitrate and chromium nitrate mixture in DI water. Results show small nanoparticles formation with average crystalline size ranging 20nm-71nm. Characterization such as XRD proved amorphous nature of nanoparticles by possessing spinel structure. Structural morphology reveals fractured shells formation with average grain size about 5.8nm. Raman spectroscopy reveals chemical bonding whereas from photoluminescence spectroscopy bandgap calculated is about 3.30eV. These all results confirmed successful formation of spinel MgCr2O4 by sol-gel method.