Fe3O4@ ZIF-8: a magnetic nanocomposite for highly efficient UO22+ adsorption and selective UO22+/Ln3+ separation

The magnetic nanocomposite Fe3O4@ ZIF-8 was for the first time used as an excellent adsorbent for the fast adsorption and separation of UO2 (2+) ions from aqueous solutions. This material exhibited an unprecedented adsorption capacity of 523.5 mg U per g and a remarkable selectivity towards UO2 (2+)/Ln(3+) at pH = 3.