Investigation of Manganese-Magnesium Ferrites and Nickel Oxide Composites Synthesized via Hydrothermal Method

Abstract

Hydrothermal Method

,Chemical synthesis of Mn₀.₃Mg₀.₇Fe₂O₄/NiO nanocomposites for groundwater fluoride reduction using hydrothermal technique. Manganese chloride (MnCl₂), magnesium chloride (MgCl₂), ferric chloride (FeCl₃), and nickel chloride (NiCl₂) were reacted with sodium hydroxide (NaOH) to produce the nanocomposites. Because of their capacity to create stable spinel ferrite structures and support improved fluoride adsorption, these precursors were chosen. Several characterization approaches were used to assess the synthesized materials' performance and characteristics. The production of crystalline spinel ferrite and NiO phases with average crystallite sizes in the nanometer range was verified by X-ray diffraction (XRD).Scanning Electron Microscopy (SEM) showed spherical nanoparticles with uniform shape. Strong absorption was detected in the visible range by ultraviolet-visible (UV-Vis) spectroscopy, suggesting appropriate optical characteristics and enabling the band gap energy to be estimated. By detecting the distinctive vibrational modes of spinel ferrite and NiO, Raman spectroscopy provided additional confirmation of their creation, bolstering the structural and phase purity of the produced nanomaterials.

As a promising, magnetically recoverable, and reusable material for sustainable water filtration, the Mn₀.₃Mg₀.₇Fe₂O₄/NiO composite showed remarkable fluoride removal effectiveness (>90%) under ideal pH circumstances.