Fig. 4: Separation performances of NF membranes.

a Performance comparison of PA-g-C3N4 with state-of-the-art NF membranes. Literature data are obtained from ref. 3. b Average flux of different half distances between patterns. c Comparison of the flow streamlines of smooth and nanoscale ordered structure. d MWCOs of the PA and the PA-g-C3N4 membrane. e Mean pore size of the PA and the PA-g-C3N4 membrane. f Trade-off between Cl−/SO42− selectivity and water permeability of different NF membranes. Literature data are obtained from ref. 14. g Flux decline and rejection of the PA-g-C3N4 membrane with methylene blue as the feed solute; cleaning was done with visible light. Source data are provided as a Source Data file.