Novel experimental methodology and optical analysis of (Ni, Co, Fe, and Cr) iodate nanocrystals

Abstract

We reported a new experimental approach for a cost-effective production route towards the nanoparticles of 3d transition metal iodates of cobalt Np-CoI, Nickel Np-NiI, Iron Np-FeI and Chrome Np-CrI, exhibit nonlinear optical behavior. This soft chemistry method, we named the Hebboul's saturated solution method, creates the necessary nanoparticles in a couple of minutes demonstrate its usefulness in this family of metal iodate. By using X-ray diffraction, scanning electron microscopy, EDX, and FTIR spectroscopy, the produced samples have been evaluated. Identification of nanocrystal agglomerations was made easier by SEM analysis, XRD and EDX. Furthermore, XRD allowed researchers to determine that the average nanocrystal size of Np-CoI, Np-FeI, and Np-NiI are 13 nm, 17 nm, and 53 nm, respectively. From UV-V analysis, it was determined that the optical bandgap of the pure nanoparticles Np-CoI, Np-FeI, Np-NiI and Np-CrI was, respectively, 3.6 eV, 3.04 eV, 2.61 eV and 3.23 eV.