Silica-coated magnetic Fe3O4 nanoparticles as efficient nano-adsorbents for the improvement of the vapor-phase adsorption of benzene

This study focused on the synthesis of silica-coated magnetic Fe3O4 (Fe3O4@SiO2) nanoparticles and their application for improvement vapor-phase adsorption benzene. The Fe3O4@SiO2 were synthesized according to co-precipitation method, while characterization was performed using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) Brunauer-Emmett-Teller (BET) surface area analyses. experimental parameters optimized achieve maximum capacity benzene by Box-Behnken design (BBD) under response methodology (RSM). adsorbed 197.50 mg/g following optimum conditions: 39.48 min residence time, 14.21 ppm initial concentration 26.51°C temperature. Langmuir, Freundlich Dubinin-Radushkevich (D-R) models used evaluate equilibrium data, results found be well fitted D-R model. kinetic data obeyed pseudo-second-order model nanoparticles. demonstrated potential as promising low-cost nano-adsorbents