Evaluation of Photocatalytic Activity and Electrochemical Properties of Hematite Nanoparticles

The symmetric nano morphologies, asymmetric electronic structures, and as well the heterojunctions of developed photocatalytic systems perform a vital role in promoting light absorption, separation electron hole pairs charge carrier transport to surface when exposed near-infrared (NIR) light. In this present work, we synthesized hematite (α-Fe2O3) nanoparticles (NPs) by facile hydrothermal method studied their structural, optical, properties. Powder X-ray diffraction (XRD) confirmed rhombohedral phase α-Fe2O3 NPs, Fourier transform infrared spectroscopy (FT-IR) was used investigate stretching vibrations functional groups on catalysts. optical bandgap energy estimated be 2.25 eV using UV-Vis diffuse reflectance (UV-Vis DRS) scanning microscopy (SEM) images indicated sphere like morphology. oxidation reduction properties NPs were analyzed cyclic voltammetry (CV). utilized for degradation methylene blue (MB) dye under natural sunlight. experimental results demonstrate that efficiency achieved at 33% 2 h, pseudo-first-order rate constant calculated 0.0033 min−1.