Fe3O4@SiO2 magnetic core-shell nanoparticles functionalized with 1,4-dihydroxyanthraquinone as an effective and recyclable adsorbent for the removal of divalent nickel from aqueous solutions

Articles in Press

Document Type : Original Article

Authors

1 Assistant Professor, Chemistry and Process Research Department, Niroo Research Institute (NRI), Tehran, Iran

2 Payam Noor University

10.22034/ijche.2024.432519.1384

Abstract

In this research, Fe3O4 nanoparticles are functionalized with 1 and 4-dihydroxyanthraquinone molecules. The aim of this study is synthesis a novel adsorbent for the removal of divalent nickel ions from aqueous solutions. The structural, crystalline, particle size, magnetic properties, and thermal stability of the synthesized nanoparticles are investigated. In order to characterize the synthesized nanomagnetic particles, Fourier infrared spectroscopy, X-ray diffraction, field emission scanning electron microscope, transmission electron microscope, vibrating sample magnetometer and thermal weighing are applied here. Afterwards, the adsorption kinetic of synthesized nanoparticles and the effect of adsorbent dosage are investigated in nickel ion removal process. The adsorption capacity of 36.6 mg/g is obtained at ambient temperature in a period of 28 minutes at pH 7. Finally, the possibility of reusing and recycling of magnetic nanoparticles are investigated in the adsorption-desorption process of divalent nickel ions and the results proved that the synthetic nanocomposite is an effective adsorbent with excellent performance for 7 consecutive cycles.

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Iranian Chemical Engineering Journal

Articles in Press, Accepted Manuscript
Available Online from 05 May 2024

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