Synchronous construction of high sulfonic acid grafting degree and large surface area in conjugated microporous polymer adsorbents for efficient removal of uranium (VI)

We innovatively develop molecular engineering strategy to synchronously construct high -SO3H grafting degree and large BET in an adsorbent. The PePy containing the pyrene-based monomer with extended π-conjugation degree and high rigidity has narrow energy band and large BET, resulting in the PePy-SO3H having a higher degree of -SO3H grafting while maintaining a satisfactory specificity BET. Astonishedly, the PePy-SO3H adsorben exhibits an exceptionally high adsorption capacity of 579.0 mg/g.