Posted by Researchers from the United States investigated how cationic βCD polymers capture PFAS from water. The study showed that adsorption is driven by complementary ion exchange, CD host-guest complexation, and hydrophobic interactions, with each mechanism contributing differently as the polymer becomes saturated. While inorganic ions competed with PFAS for ion-exchange sites, host-guest and other hydrophobic interactions remained more resilient under environmentally relevant conditions. The findings provide a mechanistic framework for designing more selective and effective CD-based materials for PFAS removal from complex water sources.
🔗 https://lnkd.in/gAgBjvBq
Jieyuan Wang, Zhi-Wei Lin, William R. Dichtel, Damian E. Helbling; Synergistic and Complementary Electrostatic and Hydrophobic Interactions Drive Per- and Polyfluoroalkyl Substance (PFAS) Adsorption to Cationic β-Cyclodextrin Polymers. Environ. Sci. Technol. 11 August 2026; 60 (31): 22033–22043. https://doi.org/10.1021/acs.est.6c06781