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Research Article Open access CC BY 4.0

Synthesis of Magnetic Iron Oxide Fe3O4/α-Fe2O3 for the Adsorptive Removal of Cadmium from Aqueous Solution

Koua Moro, Aimé Serge Ello, Djedjess Essoh Jules-César Meledge, Konan Roger Koffi

Chemical Science International Journal · pp. 35–43 · Published 12 Jul 2022

10.9734/CSJI/2022/v31i230279

Abstract

Magnetic iron oxide nanoparticles were successfully synthesized by co-precipitation method. The magnetite and mixture of magnetite/ hematite iron oxide were obtained and characterized by X-ray diffraction, scanning electron microscopy, nitrogen adsorption/desorption isotherms and vibrating sample magnetometer. These nanoparticles exhibited good adsorbents performance for removal cadmium metal ion. The mixture of magnetite/ hematite particles showed small size of particle and removed cadmium ion rapidly. The rates of Cd removal were 90 and 95% with Fe3O4 and Fe3O4/α-Fe2O3 samples respectively and the pseudo first and second kinetic models were applied to describe adsorption. Langmuir and Freundlich models were used for describing adsorption isotherms.

Cadmium heavy metal hematite iron oxide magnetite

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