Abstract

The Fe doped ZnO nanoparticles were prepared using high-energy ball milling technique. The X-ray diffraction was utilized to study the effect of ball milling time on the crystalline structure. Field emission scanning electron microscopy was used to analyze the morphology of Fe doped ZnO. The intensity of the peaks decreases with the ball milling time and also no evidence was found the appearance of Fe3O4 peaks at above 30 h, indicates a decrement in crystallinity owing to the incorporation of Fe into ZnO sites and it confirmed through peak shift in phase analysis. The electron structure was studied by X-ray photoelectron spectroscopy. It was observed that the both Zn and Fe are in 2+ oxidation state. The effect of milling time on optical properties and photocatalytic activity of Fe doped ZnO was determined using UV–visible spectrophotometry. Photocatalytic efficiency of the prepared samples was estimated by degradation of methylene orange dye in aqueous solution under sunlight irradiation. Maximum degradation of ∼98.7% for MO was achieved using 40 h ball milled Fe doped ZnO nanoparticles.

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