Employing metal-organic cage for selective capture of UO22+ and Sr2+

Selective capture of UO22+ and Sr2+ ions represents a key component in the nuclear fuel reprocessing, accident prevention, environmental protection. We report herein proof concept, employing metal-organic cage (MOC) for selective or ions, through using C3-symmetrical multiple-carboxylate ligand (H3L) to fix uranyl together. By means such MOC approach, we can facilitate extraction from multiple metallic mixed solution by H3L ligands as an extractant, showing ultrahigh efficiency 97% selectivity 19.4–97, suggesting its superior application capture. The mechanism outstanding performance is due formation polyoxouranyl-based MOC. Moreover, this compound be also used solid adsorbent selectively unique with SrO4N2 octahedral coordination.