Chemical co-precipitation synthesis of manganese ferrite (MnFe₂O₄) nanoparticles as a magnetic adsorbent of lead

Article type: Research Article

Authors: Shahidizandi, Shima^a | Mohammadi-Manesh, Hossein^{a; *} | Loghavi, Mohammad Mohsen^{a; b} | Hakimi, Mohsen^c

Affiliations: [a] Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran | [b] Department of Energy Storage, Institute of Mechanics, Shiraz, Iran | [c] Department of Physics, Faculty of Science, Yazd University, Yazd, Iran

Correspondence: [*] Corresponding author: Hossein Mohammadi-Manesh, Department of Chemistry, Faculty of Science, Yazd University, Yazd, P.O. Box: 89195/741, Iran. Tel.: +98 35 31232646; Fax: +98 35 38210644; E-mail: mohammadimanesh@yazd.ac.ir; ORCID: 0000-0003-2825-4099.

Abstract: Herein, MnFe2O4 binary oxides, including various percentages of Fe3O4 were synthesized using the chemical co-precipitation method. In order to determine the physicochemical properties, Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (SEM-EDX) analyses were used. Adsorbent dosage, pH of the solution, contact time, and adsorbate concentration were optimized during the adsorption process. It was found that the Langmuir isotherm model is the best kinetic model for adsorption. Finally, the mean adsorption energy, reproducibility, and spontaneity of the adsorbent were also estimated, which showed that the physical adsorption mechanism is dominant.

Keywords: Manganese ferrite nanoparticles, adsorption, langmuir isotherm, lead removal

DOI: 10.3233/MGC-210117

Journal: Main Group Chemistry, vol. 21, no. 4, pp. 1029-1038, 2022