Evaluation of an Ionic Porous Organic Polymer for Water Remediation

Shaoshao Jiao; Liming Deng; Xinghao Zhang; Yaowen Zhang; Kang Liu; Shaoxiang Li; Lei Wang; Dingxuan Ma

doi:10.1021/acsami.1c10464

Evaluation of an Ionic Porous Organic Polymer for Water Remediation

ACS Appl Mater Interfaces. 2021 Aug 25;13(33):39404-39413. doi: 10.1021/acsami.1c10464. Epub 2021 Aug 13.

Authors

Shaoshao Jiao¹, Liming Deng², Xinghao Zhang¹, Yaowen Zhang¹, Kang Liu¹, Shaoxiang Li³, Lei Wang^{1

3}, Dingxuan Ma¹

Affiliations

¹ Key Laboratory of Eco-chemical Engineering, Key Laboratory of Optic-electric Sensing and Analytical Chemistry of Life Science, Taishan Scholar Advantage and Characteristic Discipline Team of Eco Chemical Process and Technology, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
² Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China.
³ Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection, College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.

PMID: 34387083
DOI: 10.1021/acsami.1c10464

Abstract

The targeted synthesis of a novel ionic porous organic polymer (iPOP) was reported. The compound (denoted as QUST-iPOP-1) was built up through a quaternization reaction of tris(4-imidazolylphenyl)amine and cyanuric chloride, and then benzyl bromide was added to complete the quaternization of the total imidazolyl units. It featured a special exchangeable Cl^-/Br^--rich structure with high permanent porosity and wide pore size distribution, enabling it to rapidly and effectively remove environmentally toxic oxo-anions including Cr₂O₇^2-, MnO₄^-, and ReO₄^- and anionic organic dyes with different sizes including methyl blue, Congo red, and methyl orange from water. Notably, QUST-iPOP-1 showed ultra-high capacity values for radioactive TcO₄^- surrogate anions (MnO₄^- and ReO₄^-), Cr₂O₇^2-, methyl blue, and Congo red, and these were comparable to some reported compounds of exhaustive research. Furthermore, the relative removal rate was high even when other concurrent anions existed.

Keywords: adsorption; anionic pollutants; cationic porous organic polymer; organic pollutants; selectivity.