Facile construction of Fe@ zeolite imidazolate Framework-67 to selectively remove uranyl ions from aqueous solution

The novel Fe@ZIF-67 was utilized as a promising adsorbent for the adsorption and separation of U(VI) ions from aqueous solutions for the first time. The material performed potential adsorption capacity of 292.2 mg g(-1) and an outstanding selectivity on U(VI) at pH =4.5. Furthermore, the adsorption performance of this new adsorbent agreed well with the Langmuir, Freundlich isotherm and pseudo-first-order kinetic model. Given the advantages of this adsorbent such as high adsorption capacity, selectivity, and environment-friendly, it may be an outstanding candidate for the adsorption of U(VI) ions for practical application. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.