Natural iron sand-based Mg1-xNixFe2O4 nanoparticles as potential adsorbents for heavy metal removal synthesized by co-precipitation method. (May 2019) - Putri, W B K
Abstract: Natural iron sand-based Mg1-x Nix Fe2 O4 magnetic nanoparticles (x = 0.25, 0.50, 0.75) were synthesized using a simple co-precipitation method. The resulting nanoparticles were characterized by X-Ray Diffraction, Vibrating Sample Magnetometer, Energy Dispersive X-Ray Analysis, Atomic Absorption Spectroscopy and Scanning Electron Microscopy. The crystallite size data of the Mg1- xNixFe2 O4 revealed that all samples with varied x lie under 17 nm; with x = 0.5 variation having the least crystallite size of 14.90 nm. The surface microstructure elucidation by SEM also confirmed the presence of agglomeration at x = 0.5. Optimal condition of magnetic properties was observed in Mg1-x Nix Fe2 O4 (x = 0.75), as was displayed by the M-H curves. The adsorption capacity up to 190.5 mg/g implies that Mg1-x Nix Fe2 O4 nanoparticles have the ability to emerge as one of the beneficial adsorbents for the removal of heavy metal ions, mainly Pb and Cu ions.