Fig. 4: Organics separation performance.
From: Photo-tailored heterocrystalline covalent organic framework membranes for organics separation
a Pure ethanol permeance and Evans blue rejection of DCOM (blue), PCOM (yellow), and DPCOMs (red). b The rejection of dyes with different molecular weights through DCOM (blue), DP2hCOM (red), and PCOM (yellow). The fitted sigmoidal model of the rejection curve is Doseresp. c Comparison of the rejection curve of DP2hCOM with the reported state-of-the-art membranes. d Permeance of pure organic solvents through the DP2hCOM as a function of their inverse viscosity. e Variation of the ethanol flux of DP2hCOM under varying pressure. f Ethanol permeance of DP2hCOM after solvent immersion. g Comparison of the dye (700–900 Da) rejection and solvent permeance (ethanol or methanol) of DP2hCOM with the reported state-of-the-art membranes. The specific separation data of the reported membrane are listed in Supplementary Table 1, 3. The PCOM here is fabricated under 9.0-mW cm−2 irradiation. All the error bars in this figure represent the average deviation (n = 3 independent experiments), data are presented as mean values ± SD. Dye concentration: 20 ppm for Evans blue, 50 ppm for other dyes.
