The impacts of interfacing phytochemicals on the structural, optical and morphology of hematite nanoparticles

Abstract

Nowadays, the phytochemical approaches of metal oxide NPs have been appraised as the best choice and eco-friendly because various biomolecules are acting as multiple responsibilities have to form nanostructures. The present work focused on synthesizing the most stable α-Fe2O3 Nanostructures using medicinal valuable W. Tintoria aqueous leaf extract at (5 ml,10 ml, and15ml) concentrations. Synthesized samples were characterized by X-ray diffraction, Fourier Transform Infra-red spectroscopy, Field Emission Scanning Electron Microscope, UV-Visible spectroscopy, and X-ray Photoelectron Spectroscopy. The structural analysis reveals that the single phase of α-Fe2O3 with fine crystalline quality, besides the average crystallite sizes are gradually decreased to 28.8 nm from 39.4 nm, with increasingof leaf extract. The UV–visible analysis has reported the maximum absorption at 287 nm for 15 ml of α-Fe2O3 NPs, and the energy bandgap will be increased from 2.1 eV to 3 eV while increasing leaf extract. The FT-IR analysis gives surety for the contribution of different biomolecules on the sample surface and the formation of Fe-O bonding. FE-SEM studies exposed rhombohedral, sewed rhombohedral morphology with good particle uniformity achieved by the optimistic 15 ml - α-Fe2O3. In addition, the XPS analysis clearly shows the binding energy 712.7 eV to 726.1 eV for Iron and 534.3 eV for oxide elements. Moreover, the standard method of the phytochemical test confirms the incorporation of phenols, flavonoids, alkaloids, etc. Eventually, considering our research reports, the bio-mediated α-Fe2O3 NPs is appropriate for environment cleansing application because Fe3+configuration may act as a scavenger role and notably morphology, bandgap was caused by the interfaced phytochemicals which are highly suitable for semiconductor applications.