Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni1‐xZnxFe2O4 Magnetic Nanocomposites

• Published in: ChemistrySelect (Weinheim) 2022-12, Vol.7 (45), p.n/a
• Main Authors: Said, Abd El‐Aziz A., Abu‐Sehly, Abdel‐Hamid A., Mahmoud, Amera Z., Ahmed, Haiam, Goda, Mohamed N.
• Format: Article
• Language: English
• Subjects: Adsorption; Characterization; Dye Removal; Ferrites; Magnetization
• ISSN: 2365-6549; 2365-6549
• DOI: 10.1002/slct.202203442

Crystal violet (CV) dye is one of the most poisonous colors primarily produced in the textile industry. In the current study, the co‐precipitation assisted ultrasonic radiation method was used to synthesized Ni1‐xZnxFe2O4 magnetic nanoparticles for the CV dye removal from aqueous solutions. The adsorbents were characterized by vibrating specimen magnetometer (VSM), X‐ray diffraction (XRD), High resolution transmission electron microscope (HRTEM), X‐ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR), and nitrogen sorption analysis. XRD confirmed the successful synthesis of Ni1‐xZnxFe2O4 single phase with a characteristic diffraction (311) peak at 2θ=35.5°. XPS analysis proved the successful substitution of Ni2+ by Zn2+ ions in the spinel structure. N2 sorption revealed that, the prepared adsorbent exhibited a mesoporous structure of slit shaped and narrow entrances, especially at high annealing temperatures. Results revealed that the magnetic Ni0.1Zn0.9Fe2O4 nano adsorbent offered a maximum adsorption capacity of 473.9 mg g−1 at pH 10.0, which is significantly greater than that of the other noted for CV removal. In addition, ferromagnetic nature was observed by Ni0.5Zn0.5Fe2O4 with a saturation magnetization value of 60.1 emg/g. Equilibrium and kinetic studies demonstrated that, the adsorption is of chemical nature and controlled with pore and film diffusion. Finally, we concluded that Ni1‐xZnxFe2O4 can be utilized as a potential magnetic composite for the purification of CV contaminated water. Here, Ni1‐xZnxFe2O4 magnetic nanocomposites were synthesized by a facile co‐precipitation assisted ultrasonic radiation method. They are justified as highly efficient and potential adsorbents for the adsorptive removal of crystal violet from aqueous solution with a maximum adsorption capacity of 473.9 mg g−1 at pH 10.0. Ferromagnetic nature was observed by Ni0.5Zn0.5Fe2O4 nanocomposites with a saturation magnetization of 60.1 emg/g.