[Research Progress on the Removal of Per-and Polyfluoroalkyl Substances in Water Using Organic Framework Materials]

Per- and polyfluoroalkyl substances (PFASs) pose significant threats to ecosystems and human health due to their environmental persistence, bioaccumulation, and mobility. In recent years, many exploratory studies have focused on the removal of PFASs from water. Among these, organic framework materials have garnered widespread attention for their high adsorption capacity, selectivity, multi-mechanism synergy, and environmental adaptability in PFASs removal. However, compared to removal techniques, such as physical-chemical adsorption, chemical oxidation/reduction, and biodegradation, research on organic framework-based PFASs removal remains less extensive. Current studies primarily concentrate on the development of single materials and indoor experiments, lacking systematic assessment. Therefore, the removal potential of organic framework materials in PFASs was reviewed in detail, and the performance characteristics, modification and enhancement modes, and the removal mechanisms of three main organic framework materials (MOFs, COFs, and HOFs) were systematically summarized. It highlighted the adsorption and catalytic degradation mechanisms of these materials for the PFASs, along with influencing factors. The application potential and technical limitations of those three materials were also critically analyzed. Furthermore, future prospects for organic framework materials application in PFASs remediation in an aquatic environment were also discussed, including innovations in composite structural design, green regeneration processes, and AI-driven optimization and screening, with a view to providing a reference for promoting technological innovation in the whole chain of organic framework materials from efficient adsorption to resource-based degradation.