Fig. 8: DFT calculations analysis.

Map of functionalized PAF-1 with both positively charged sites and hydrophobic sites interacting with PFOA molecules by DFT calculations. a Optimized molecular structure of PAF-1-NDMP. b Electrostatic potential map of PAF-1-NDMP. c Optimized molecular structure of PAF-1-NDMB. d Electrostatic potential map of PAF-1-NDMB. e Optimized molecular structure of PAF-1-NDMH. f Electrostatic potential map of PAF-1-NDMH.