Hydrolytically Stable Ionic Fluorogels for High‐Performance Remediation of Per‐ and Polyfluoroalkyl Substances (PFAS) from Natural Water
Open accessAbstract
PFAS are known bioaccumulative and persistent chemicals which pollute natural waters globally. There exists a lack of granular sorbents to efficiently remove both legacy and emerging PFAS at environmentally relevant concentrations. Herein, we report a class of polymer networks with a synergistic combination of ionic and fluorous components that serve as granular materials for the removal of anionic PFAS from water. A library of Ionic Fluorogels (IFs) with systematic variation in charge density and polymer network architecture was synthesized from hydrolytically stable fluorous building blocks. The IFs were demonstrated as effective sorbents for the removal of 21 legacy and emerging PFAS from a natural water and were regenerable over multiple cycles of reuse. Comparison of one IF to a commercial ion exchange resin in mini-rapid small-scale column tests demonstrated superior performance for the removal of short-chain PFAS from natural water under operationally relevant conditions.
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H promotes electrostatic interaction through its ammonium-functionalized perfluoropolyether crosslinkers, and fluorophilic interactions between PFAS and the fluorinated crosslinker enhance removal at longer contact times.
“Similarly, H promotes electrostatic interaction through its ammonium-functionalized perfluoropolyether crosslinkers, and fluorophilic interactions between PFAS and the fluorinated crosslinker enhance removal at longer contact times [23,26].”
From Comparative evaluation of PFAS-selective adsorbents in hard-to-treat residual waste streams (2025) · cites this paper as [26]
H further benefits from fluorous interactions between the fluorinated PFAS and its fluorinated crosslinkers and end groups.
“In addition to electrostatic interactions, H further benefits from fluorous interactions between the fluorinated PFAS and its fluorinated crosslinkers and end groups.[23,26]”
From Comparative evaluation of PFAS-selective adsorbents in hard-to-treat residual waste streams (2025) · cites this paper as [26]
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Cites
Per- and polyfluoroalkyl substances in the environment
Evich, M. G., Davis, M. J. B., McCord, J. P., Acrey, B., Awkerman, J. A., Knappe, D. R. U., Lindstrom, A. B., Speth, T. F., Tebes-Stevens, C., Strynar, M. J., et al. (2022) · Science · doi:10.1126/science.abg9065 · Cited by 2,157 · see citing works
Self-citationPersistence of Perfluoroalkyl Acid Precursors in AFFF-Impacted Groundwater and Soil
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Ion exchange resin for PFAS removal and pilot test comparison to GAC
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Nontargeted mass-spectral detection of chloroperfluoropolyether carboxylates in New Jersey soils
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Advancing PFAS Sorbent Design: Mechanisms, Challenges, and Perspectives
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- Authors
- Manning, I. M., Guan Pin Chew, N., Macdonald, H. P., Miller, K. E., Strynar, M. J., Coronell, O., & Leibfarth, F. A.
- Affiliations
- University of North Carolina at Chapel Hill (US)
- Department of Environmental Sciences and Engineering Gillings School of Global Public Health University of North Carolina at Chapel Hill 135 Dauer Dr Chapel Hill NC 27599 USA
- Environmental Protection Agency (US)
- Corresponding author
- Coronell, Orlando
- Leibfarth, Frank A.
- ORCID
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2022-09-02
- Volume
- 61
- Issue
- 41
- Pages
- e202208150-e202208150
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- PMC
- PMC9711936
- OpenAlex
- W4292457976
- Cited by
- 57
- References
- 7
- Citations by year
- 2026: 17 · 2025: 16 · 2024: 11 · 2023: 11 · 2022: 2
- FWCI
- 3.54
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Angewandte Chemie International Edition (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Funders
- Strategic Environmental Research and Development Program (ER20-1211)
- National Institute of Environmental Health Sciences (P42ES031007)
- Directorate for Mathematical and Physical Sciences (CHE-1828183, CHE-0922858)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
- Physical Sciences › Materials Science › Surfaces, Coatings and Films › Surface Modification and Superhydrophobicity
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Keywords
- per- and polyfluoroalkyl substances, PFAS removal, water remediation, granular sorbents, emerging PFAS, short-chain PFAS, adsorbent regeneration, column experiments
- MeSH terms
- Fluorocarbons, Ion Exchange Resins, Polymers, Water, Water Pollutants, Chemical
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