Study on the Removal of PFAS by Functionalized Porous Organic Polymers
DOI:
https://doi.org/10.54691/adg91204Keywords:
PFAS, Porous Organic Polymers, Synthesis Mechanism, Functionalization, Adsorption Removal.Abstract
Per- and polyfluoroalkyl substances (PFAS) have emerged as a globally significant new class of persistent organic pollutants due to their exceptional chemical stability, environmental persistence, and pronounced bioaccumulative toxicity. Among existing remediation technologies, adsorption is widely recognized as the most promising approach for treating trace and low-concentration PFAS in water bodies due to its high removal efficiency, low operational energy consumption, and ease of operation. Porous organic polymers (POPs), as an emerging platform material, offer an ideal molecular engineering platform for efficient PFAS capture due to their exceptional high specific surface area, precisely tunable pore size distribution, and outstanding physicochemical stability. This paper systematically reviews the design and synthesis strategies for representative POPs, including conjugated microporous polymers (CMPs), hypercrosslinked polymers (HCPs), intrinsically microporous polymers (PIMs), porous aromatic frameworks (PAFs), and covalent organic frameworks (COFs). It focuses on analyzing the intrinsic mechanisms by which functionalization with key groups such as amino and fluorine groups enhances adsorption capacity and selectivity, and delves into the synergistic enhancement processes of electrostatic forces, hydrophobic interactions, and fluorine-affinity interactions in complex aqueous environments. Furthermore, addressing current technical challenges such as the difficulty in removing short-chain PFAS and interference from competing ions in complex real-world aqueous matrices, this paper objectively evaluates the potential and limitations of POPs in practical engineering applications.
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