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

Year 2021, Volume: 5 Issue: 1, 33 - 41, 30.06.2021

Mehmet Şakir Ece , Sinan Kutluay Ömer Şahin

https://doi.org/10.32571/ijct.755761

Cited By: 12

Abstract

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

Keywords

Magnetic Fe3O4@SiO2 nanoparticles, response surface methodology, , vapor-phase adsorption of benzene

Supporting Institution

Mardin Artuklu University Research Fund (MAUBAP)

Project Number

MAÜ.BAP.18.SHMYO.030

Thanks

The authors are grateful to the Mardin Artuklu University Research Fund (MAUBAP, Project No. MAÜ.BAP.18.SHMYO.030) for their financial support.

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