Zhang Qian, Yue Tian-Jiao, Sun Si-Yuan, Jiang Shi-Jie, Feng Jing-Lan, Guo Hai-Ming
State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China.
School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, 453007, China.
ChemSusChem. 2025 Feb 1;18(3):e202401391. doi: 10.1002/cssc.202401391. Epub 2024 Nov 5.
Perfluorooctanoic acid (PFOA) is currently one of the most important chemicals posing environmental risks, and there is an urgent need to find methods to efficiently remove PFOA from environmental media. Here, two decaamino-pillar[5]arene-based fluorine-rich polymer networks, called FA2P-P and FA6P-P, were constructed using a convenient method. FA6P-P had an excellent ability to take up PFOA, and had a capacity of 1423 (mg PFOA) (g FA6P-P), which is the second highest adsorption capacity reported for any PFOA sorbent. FA6P-P removed >99 % of the PFOA from a solution and decreased the PFOA concentration from 1000 μg L in 5 min at an exceedingly low adsorbent loading of 0.7 mg L, giving a final PFOA concentration <4 ng L, which is lower than the most recent enforceable maximum concentration set by the United States Environmental Protection Agency. A high rate constant (k) of 55.8 g mg h was observed. Pillar[5]arene gives the material hydrophobic properties and also amino sites and hydrophobic chains, which are synergistic PFOA binding sites. The polymer was very stable and readily regenerated. The results indicated that pillar[5]arene-based porous organic polymer sorbents are excellent candidates for capturing PFOA.
全氟辛酸（PFOA）是目前对环境构成风险的最重要化学物质之一，迫切需要找到从环境介质中有效去除PFOA的方法。在此，使用一种简便方法构建了两种基于十氨基柱[5]芳烃的富氟聚合物网络，称为FA2P-P和FA6P-P。FA6P-P具有出色的PFOA吸附能力，吸附容量为1423（mg PFOA）/（g FA6P-P），这是报道的所有PFOA吸附剂中第二高的吸附容量。FA6P-P在极低的吸附剂负载量0.7 mg/L下，5分钟内从溶液中去除了>99%的PFOA，并将PFOA浓度从1000 μg/L降至<4 ng/L，低于美国环境保护局最近规定的可执行最大浓度。观察到高的速率常数（k）为55.8 g/（mg·h）。柱[5]芳烃赋予材料疏水性能以及氨基位点和疏水链，这些是协同的PFOA结合位点。该聚合物非常稳定且易于再生。结果表明，基于柱[5]芳烃的多孔有机聚合物吸附剂是捕获PFOA的极佳候选材料。
