Installation of synergistic binding sites onto porous organic polymers for efficient removal of perfluorooctanoic acid

Xiongli Liu, Changjia Zhu, Jun Yin, Jixin Li, Zhiyuan Zhang, Jinli Li, Feng Shui, Zifeng You, Zhan Shi, Baiyan Li, Xian He Bu, Ayman Nafady, Shengqian Ma

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Herein, we report a strategy to construct highly efficient perfluorooctanoic acid (PFOA) adsorbents by installing synergistic electrostatic/hydrophobic sites onto porous organic polymers (POPs). The constructed model material of PAF-1-NDMB (NDMB = N,N-dimethyl-butylamine) demonstrates an exceptionally high PFOA uptake capacity over 2000 mg g−1, which is 14.8 times enhancement compared with its parent material of PAF-1. And it is 32.0 and 24.1 times higher than benchmark materials of DFB-CDP (β-cyclodextrin (β-CD)-based polymer network) and activated carbon under the same conditions. Furthermore, PAF-1-NDMB exhibits the highest k2 value of 24,000 g mg−1 h−1 among all reported PFOA sorbents. And it can remove 99.99% PFOA from 1000 ppb to <70 ppt within 2 min, which is lower than the advisory level of Environmental Protection Agency of United States. This work thus not only provides a generic approach for constructing PFOA adsorbents, but also develops POPs as a platform for PFOA capture.

Original languageEnglish
Article number2132
JournalNature Communications
Volume13
Issue number1
DOIs
Publication statusPublished - Apr 2022

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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