Modification of graphene oxide with imidazolium-based ionic liquid for significant sorption of La(III) and Pr(III) from aqueous solutions

Abstract A straightforward ferrocyanide immobilization on the surface of graphene oxide (GO) was conducted for rapid and efficient adsorption capacity lanthanum praseodymium from an aqueous solution. The GO mixed with 1-methyl imidazole in presence epichlorohydrin to form GO-imidazole-Cl thereafter suspended a potassium solution fabricate GO-imidazole-FeCN. prepared materials were characterized different advanced techniques confirming preparation method. ability GO-imidazole-FeCN towards La(III) Pr(III) ions evaluated. Moreover, isotherm showed that sorption process fitted Langmuir model considerable maximum 781.25 mg g −1 862.07 Pr(III). thermodynamic studies both metal spontaneous endothermic. In addition, adsorbent excellent adsorption–desorption behavior over 5 times, suggesting may be considered potential candidate removal which present fission products.