公开(公告)号：US20240294685A1

公开(公告)日：2024-09-05

申请号：US18568609

申请日：2022-06-09

Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： Xiao SU ,  Haley VAPNIK ,  Johannes ELBERT

IPC: C08F230/04 ,  B01D15/20 ,  B01D15/36 ,  C02F1/42 ,  C02F101/20 ,  C09D143/00

CPC classification number: C08F230/04 ,  B01D15/203 ,  B01D15/362 ,  C02F1/42 ,  C09D143/00 ,  C02F2001/425 ,  C02F2101/20 ,  C02F2303/16

Abstract: Rare earth elements (REEs) play an essential role in our modern society, being critical resources for the growing electronic devices and renewable energy technologies. For the reversible capture and release of REEs, we designed and synthesized a redox-copolymer poly(ferrocenylpropyl methacrylamide-co-methacrylic acid) (P(FPMAm-co-MAA)) that combines an ion-exchange carboxylic acid group for REE adsorption, and an redox-active ferrocene moiety for electrochemical regeneration. By molecularly tuning the copolymer composition, efficient adsorption uptake could be achieved alongside electrochemically regenerated adsorbent reuse. The copolymer sorbent showed stoichiometric binding for yttrium (Y), cerium (Ce), neodymium (Nd), europium (Eu), gadolinium (Gd), and dysprosium (Dy) based on carboxylic acid active site.