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Citation
Tags
HERO ID
5024244
Reference Type
Journal Article
Title
Removal of GenX and Perfluorinated Alkyl Substances from Water by Amine-Functionalized Covalent Organic Frameworks
Author(s)
Ji, W; Xiao, L; Ling, Y; Ching, C; Matsumoto, M; Bisbey, RP; Helbling, DE; Dichtel, WR
Year
2018
Is Peer Reviewed?
Yes
Journal
Journal of the American Chemical Society
ISSN:
0002-7863
EISSN:
1520-5126
Volume
140
Issue
40
Page Numbers
12677-12681
Language
English
PMID
30256633
DOI
10.1021/jacs.8b06958
Web of Science Id
WOS:000447354800005
Abstract
Per- and polyfluorinated alkyl substances (PFAS), such as perfluorooctanoic acid (PFOA), perfluorooctanesulfonate (PFOS), and ammonium perfluoro-2-propoxypropionate (GenX), contaminate ground and surface waters throughout the world. The cost and performance limitations of current PFAS removal technologies motivate efforts to develop selective and high-affinity adsorbents. Covalent organic frameworks (COFs) are unexplored yet promising adsorbents because of their high surface area and tunable pore sizes. Here we show that imine-linked two-dimensional (2D) COFs bearing primary amines adsorb GenX rapidly at environmentally relevant concentrations. COFs with partial amine incorporation showed the highest capacity and fastest removal, suggesting that the synergistic combination of the polar group and hydrophobic surfaces are responsible for GenX binding. A COF with 28% amine loading also removed more than 90% of 12 out of 13 PFAS. These results demonstrate the promise of COFs for PFAS removal and suggest design criteria for maximizing adsorbent performance.
Tags
PFAS
•
Additional PFAS (formerly XAgency)
•
Expanded PFAS SEM (formerly PFAS 430)
Ammonium 4,8-dioxa-3H-perfluorononanoate
•
GenX Chemicals (CASRN 13252-13-6 and CASRN 62037-80-3)
LitSearch - GenX: July 2017 - Feb 2019
PubMed
WoS
LitSearch GenX Ammonium Salt: Feb 2018 - Feb 2019
PubMed
WoS
•
PFAS 150
Literature Search Update December 2020
PubMed
Literature Search August 2019
PubMed
Not prioritized for screening
Ammonium perfluoro-2-methyl-3-oxahexanoate
Ammonium perfluorooctanoate
Perfluorooctanesulfonate
Perfluorooctanesulfonic acid
Perfluorooctanoic acid
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search Update (2013-2019)
PubMed
WOS
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