Fig. 4: Chemical structures of TFC, C-TFN, and N-TFN. | Nature Communications

Fig. 4: Chemical structures of TFC, C-TFN, and N-TFN.

From: Microporous organic nanotube assisted design of high performance nanofiltration membranes

Fig. 4: Chemical structures of TFC, C-TFN, and N-TFN.The alternative text for this image may have been generated using AI.

a Wide-scan XPS spectra (inset: elemental compositions). b Rejection of uncharged model glycol and polyethylene glycol solutes (the feed concentration is 1000 ppm); inset figure is molecular weight cut-off of the membranes. c Pore size distributions determined from solute rejection data. Molecular dynamics simulations to elucidate the pore structure and size of TFC and N-TFN membranes: interconnected (dark blue) and disconnected (light blue) voids in d TFC and e N-TFN polyamide membranes as determined by a probe with a 1.2 Å radius. f Simulated pore size distributions of TFC, and N-TFN.

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