Fu Kaixing, Huang Jinjing, Luo Fang, Fang Zhuoya, Yu Deyou, Zhang Xiaolin, Wang Dawei, Xing Mingyang, Luo Jinming
State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
Engineering Research Center for Eco-Dyeing and Finishing of Textiles (Ministry of Education), Zhejiang Sci-Tech University, Hangzhou 310018, P. R. China.
Environ Sci Technol. 2024 Sep 12. doi: 10.1021/acs.est.4c06519.
As regulatory standards for per- and polyfluoroalkyl substances (PFAS) become increasingly stringent, innovative water treatment technologies are urgently demanded for effective PFAS removal. Reported sorbents often exhibit limited affinity for PFAS and are frequently hindered by competitive background substances. Recently, fluorinated sorbents (abbreviated as fluorosorbents) have emerged as a potent solution by leveraging fluorine-fluorine (F···F) interactions to enhance selectivity and efficiency in PFAS removal. This review delves into the designs and applications of fluorosorbents, emphasizing how F···F interactions improve PFAS binding affinity. Specifically, the existence of F···F interactions results in removal efficiencies orders of magnitude higher than other counterpart sorbents, particularly under competitive conditions. Furthermore, we provide a detailed analysis of the fundamental principles underlying F···F interactions and elucidate their synergistic effects with other sorption forces, which contribute to the enhanced efficacy and selectivity. Subsequently, we examine various fluorosorbents and their synthesis and fluorination techniques, underscore the importance of accurately characterizing F···F interactions through advanced analytical methods, and emphasize the significance of this interaction in developing selective sorbents. Finally, we discuss challenges and opportunities associated with employing advanced techniques to guide the design of selective sorbents and advocate for further research in the development of sustainable and cost-effective treatment technologies leveraging F···F interactions.
随着全氟和多氟烷基物质（PFAS）的监管标准日益严格，迫切需要创新的水处理技术来有效去除PFAS。报道的吸附剂对PFAS的亲和力往往有限，并且经常受到竞争性背景物质的阻碍。最近，氟化吸附剂（简称为氟吸附剂）通过利用氟-氟（F···F）相互作用来提高PFAS去除的选择性和效率，已成为一种有效的解决方案。本综述深入探讨了氟吸附剂的设计和应用，强调了F···F相互作用如何提高PFAS的结合亲和力。具体而言，F···F相互作用的存在导致去除效率比其他同类吸附剂高出几个数量级，特别是在竞争条件下。此外，我们对F···F相互作用的基本原理进行了详细分析，并阐明了它们与其他吸附力的协同作用，这有助于提高吸附效果和选择性。随后，我们研究了各种氟吸附剂及其合成和氟化技术，强调了通过先进分析方法准确表征F···F相互作用的重要性，并强调了这种相互作用在开发选择性吸附剂中的意义。最后，我们讨论了采用先进技术指导选择性吸附剂设计相关的挑战和机遇，并倡导在利用F···F相互作用开发可持续且经济高效的处理技术方面进行进一步研究。
