High-Performance Metal-Organic Framework-Templated Sorbent for Selective Eu(III) Capture.

ABSTRACT: A stable porous sorbent M1 was achieved through the specific transformation of flexible thioalkyl groups and metal cluster sites in a zirconium MOF (metal-organic framework; Zr-L) template. The target polymer combines sulfoxide/sulfone and phosphoric acid in a single framework, which was fully characterized by 1H-NMR, PXRD, IR, and elemental analysis. When employed as the heavy metal adsorbent, M1 exhibit a remarkable Eu(III) sorption behavior, achieving both high chemical affinity (K d = 105) and sorption capacity (the maximum Eu(III) sorption capacity reached 220 mg g-1 at pH = 4.0 and T = 298 K calculated from the Langmuir model). Recyclability and selectivity test of M1 further prove that the sorbent is highly stable and effective for europium enrichment in the aqueous solution. This w

SUBMITTER: Hou YL 

PROVIDER: S-EPMC7144142 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature