Fig. 2: Characterization and structural analysis of the CCOF-300 membrane.

a Synthesis of CCOF-300 membrane. b XRD patterns of CCOF-300 membrane (black line), COF-300 powder (blue black) and simulated data (red line). SEM images of c surface of the CCOF-300 membrane and d cross-section of the CCOF-300 membrane and e corresponding elemental mapping image of carbon. f Mechanism of chiral-induced membrane formation.