Abstract
In this study, four functionalized metal–organic frameworks (MOFs) composite (UiO-66-COOCH3, UiO-66-CONH2, UiO-66-CN and UiO-66-SO3H) were successfully prepared by post-synthesis modification for the removal of Co(II) from simulated 60Co radioactive wastewater. Benefiting from the strong uptake ability of these functional MOFs, the as-synthesized MOFs adsorbents exhibit an extraordinary adsorption performance towards Co(II), and their saturated adsorption capacity reached 334.4 mg g−1 (UiO-66-COOCH3), 339.7 mg g−1 (UiO-66-CONH2), 274.6 mg g−1 (UiO-66-CN) and 293.7 mg g−1 (UiO-66-SO3H), respectively. In addition, density functional theory (DFT) was used to study the adsorption mechanism of Co(II) by MOFs. The results of theoretical calculation revealed that the functional groups of MOFs have strong chelating ability to Co(II), which gradually increase with the order of nitrile group, sulfonic acid group, ester group and amide group, and the order is also consistent with the adsorption amount of Co(II) in the experiment. All these works suggest that the synthesized MOFs are potential candidate for 60Co seperation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
