牛津大学Vronique Gouverneur研究组近日取得一项新成果。经过不懈努力，他们揭示了磷酸盐驱动的机械化学PFAS破坏以实现氟化物的再利用。相关论文于2025年3月26日发表在《自然》杂志上。

在这里，课题组披露了一项将多种PFAS（包括氟塑料聚四氟乙烯和聚偏氟乙烯）转化为高价值氟化学品的协议。为了实现这一目标，PFASs在无溶剂机械化学条件下与磷酸钾盐反应，这是一种矿化过程，可以回收氟作为KF和K₂PO₃F进行氟化化学。磷酸盐可以回收用于再降解，这意味着对磷-磷循环没有有害影响。因此，全氟化合物不仅是可破坏的，而且现在可以为可持续的循环氟经济做出贡献。

据介绍，全氟烷基和多氟烷基物质（PFASs）是持久性、生物蓄积性和人为污染物，因其对人类健康的不利影响而引起了公共和私营部门的注意。虽然已经采用了各种技术来降解全氟辛烷磺酸，重点是非聚合官能化化合物（全氟辛酸和全氟辛烷磺酸），但一种通用的全氟辛烷磺酸破坏方法结合氟回收进行升级回收是非常可取的。

附：英文原文

Title: Phosphate-enabled mechanochemical PFAS destruction for fluoride reuse

Author: Yang, Long, Chen, Zijun, Goult, Christopher A., Schlatzer, Thomas, Paton, Robert S., Gouverneur, Vronique

Issue&Volume: 2025-03-26

Abstract: Perfluoroalkyl and polyfluoroalkyl substances (PFASs) are persistent, bioaccumulative and anthropogenic pollutants that have attracted the attention of the public and private sectors because of their adverse impact on human health1. Although various technologies have been deployed to degrade PFASs with a focus on non-polymeric functionalized compounds (perfluorooctanoic acid and perfluorooctanesulfonic acid)2,3,4, a general PFAS destruction method coupled with fluorine recovery for upcycling is highly desirable. Here we disclose a protocol that converts multiple classes of PFAS, including the fluoroplastics polytetrafluoroethylene and polyvinylidene fluoride, into high-value fluorochemicals. To achieve this, PFASs were reacted with potassium phosphate salts under solvent-free mechanochemical conditions, a mineralization process enabling fluorine recovery as KF and K2PO3F for fluorination chemistry. The phosphate salts can be recovered for reuse, implying no detrimental impact on the phosphorus cycle. Therefore, PFASs are not only destructible but can now contribute to a sustainable circular fluorine economy.

DOI: 10.1038/s41586-025-08698-5

Source: https://www.nature.com/articles/s41586-025-08698-5