期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 21, 页码 24319-24327出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c04646
关键词
PFASs; photopolymerization; PET-RAFT; fluorine; hydrogel
资金
- NSFC [21704016, 21971044]
- Fudan University
Per- and polyfluorinated alkyl substances (PFASs) are broadly used as surfactants and water/oil repellents for many decades. However, they are toxic, environmental persistence, and widely detected in water sources. In this work, we developed a fluorous-core nanoparticle-eiribedded hydrogel (FCH) synthesized by the metal-free tandem photocontrolled radical polymerization under visible-light irradiation. With the FCH material, the scope of absorbable PFASs has been expanded to neutral, anionic, cationic and zwitterionic PFASs with, the same adsorbent for the first time. The fluorous nanopartides exhibited strong and selective affinity ward PFASs without being dramatically influenced by pH levels and background ions, enabling efficient removing of PFASs at high to environmentally relevant concentrations (10 mg/L to 1 mu g/L). Furthermore, the FCH network has shown good mechanical performance, facilitating the separation, regeneration, and recycling of adsorbent for multiple runs. These results demonstrate the promise of the FCH material for PFASs separation and adsorbent recycling toward sustainable environment.
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