Fig. 6: Stability of COF-CDN membranes.
From: Covalent organic framework membrane with hourglass-shaped nanochannels for ultrafast desalination
a Long-term testing of COF-CDN-12 membrane for Na2SO4 solution using a cross-flow filtration cell at a constant operating pressure of 2.0 bar; b Na2SO4 rejection of COF-CDN-12 membrane when the pH shifted from 3 to 11 after 3 cycles; c the performance of COF-CDN-12 membrane, as compared to the state-of-the-art membranes (Supplementary Table 2). The red point represents this work, while the black and blue points indicate the rejection of Na2SO4 and NaCl, respectively.
