新兴的全氟辛磺酸（PFOS）和全氟辛酸（PFOA）替代品在全球的水环境中普遍存在，危害人类健康和生物安全。国际上还没有系统研究吸附去除这些新兴全氟和多氟烷基物质（PFASs），吸附机理不清楚，缺少高选择吸附材料。本项目拟基于孔排挤效应和亲氟原理，研制高选择吸附新兴PFASs的有序孔共价有机骨架（COFs）、氟化COFs和磁性COFs等新材料；系统研究吸附特性，从分子水平阐明不同极性基团和C-F链的PFASs在COFs材料上的高选择吸附新机理；研究突破COFs材料的再生方法，利用负载的纳米磁性Fe3O4，通过类芬顿和过硫酸盐原位催化氧化降解吸附的PFASs，实现PFASs完全降解和磁性COFs材料稳定重复使用的目标，进而提出新兴PFASs的氧化降解机理。本研究能为水中新兴PFASs的污染控制提供理论和技术支持，有助于在给水和污水处理中高效去除PFASs类微量污染物。

Emerging alternatives for perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) widely exist in global waters and affect the human health and biological security. Since no systematic research has been conducted to remove these per- and polyfluoroalkyl substances (PFASs) by adsorption in the world, their adsorption mechanisms are unknown and no selective adsorbents are available. In this study, the highly selective new adsorbents for emerging PFASs including the ordered-pore Covalent Organic Frameworks (COFs), fluorinated COFs and magnetic COFs will be prepared based on the pore repulsion effect and fluorophilic principle. The adsorption behaviors will be systematically studied, and the new highly selective adsorption mechanisms of PFASs with different polar groups and C-F chains by COFs will be clarified from the molecular level. The regeneration of the spent COFs will be studied, and the Fenton-like oxidation and persulfate oxidation will be used to in-situ catalytically degrade the adsorbed PFASs with the help of the loaded magnetic nano- Fe3O4. Both the complete degradation of PFASs and the stable reuse of the magnetic COFs will be achieved, and the oxidative degradation mechanism of emerging PFASs will be proposed. This study can provide the theoretical and technical support for the contamination control of PFASs in waters, helpful for the efficient removal of micro-pollutants such as PFASs in water and wastewater treatment.