Abstract
The separation of rare earth elements (REEs) has been a persistent challenge in the industrial sector. Despite the development of numerous adsorption materials for rare earth element separation, achieving high adsorption capacity and superior separation selectivity from these materials simultaneously has proven difficult. In this study, we synthesized a nanocomposite material called CoFeM@Be_IIM by combining bentonite clay’s good adsorption capacity with cobalt ferrite’s superior magnetic separation performance (CoFe2O4) and ion-imprinted materials’ high target separation selectivity (IIMs). We used surface ion-imprinting technique to create the material. The ion-imprinted material has a maximum adsorption capacity of 87.6 mg/g for Gd(III), with a selectivity of Gd/La ≈ 28.6, Gd/Nd ≈ 22.6, and Gd/Y ≈ 15.2. The Gd(III)-CoFeM@Be_IIM showed good reusability for up to five cycles. Our work presents a new magnetic ion-imprinted nano-adsorbent as a reliable and effective solution for recovering and utilizing REEs from industrial wastewater.
Published Version
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