A novel combustion fuel for the synthesis of nanocrystalline ZnAl2O4 particles based on the thermodynamic correlations and their structural and optical studies

The effect of reaction and annealing temperatures on physicochemical properties of highly stable ZnO nanoparticles synthesized via a green route using Plumeria obtusa L.

“…The value of the direct energy bandgap of the material (E g ) is determined for n = 2 by plotting an extrapolation to the straight line obtained from the plots of (ahy) n versus hy that intercept the hy-axis. 52,53 Fig. 14 presents the optical energy bandgaps obtained using the Tauc method for four samples of ZnO NPs, which are found to be 3.48 eV, 3.39 eV, 3.27 eV, and 2.96 eV for POZ-37, POZ-50, POZ-60 and POZ-70, respectively.…”