Ultrarapid and efficient sequestration of iodate and iodide with a pillar[5]arene-based cationic polymeric network

Abstract

A macrocycle-based approach to construction of a cationic polymeric network with pillar[5]arene as nodes for efficient sequestration of hazardous IO₃^– and I^– is presented. Ultrafast kinetics (ca. 4 min) was achieved along with excellent adsorption capacities for both IO₃^– (456 mg g^-1) and I^– (370 mg g^-1), good selectivity, and outstanding reusability. This work showcases the merit of pillar[5]arene as nodes in cationic adsorption materials in removal of anionic iodine species.