Iron Oxide (Fe3O4)-Supported SiO2 Magnetic Nanocomposites for Efficient Adsorption of Fluoride from Drinking Water: Synthesis, Characterization, and Adsorption Isotherm Analysis

摘要: This research work reports the magnetic adsorption of fluoride from drinking water through silica-coated Fe3O4 nanoparticles. Chemical precipitation and wet impregnation methods were employed to synthesize nanomaterials. Moreover, synthesized nanomaterials characterized for physicochemical properties scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray powder diffraction. Screening studies conducted select best iron oxide loading (0.0–1.5 wt%) calcination temperature (300–500 °C). The selected nanomaterial (0.5Fe-Si-500) showed a homogenous FeO distribution with 23.79 nm crystallite size. optimized reaction parameters were: 10 min contact time, 0.03 g L−1 adsorbent dose, mg (F−) concentration. Adsorption data fitted Langmuir Freundlich isotherm models. Qm KF (the maximum capacities) values 5.5991 g−1 1.869 L respectively. Furthermore, accelerated shorter times high capacity at working pH was among outcomes this work.