This paper reports a new class of thin film nanocomposite membranes integrated with covalent organic structures nanoparticles in the polyamide skin layer and having boosted solvent permeation flux and high solute being rejected for organic solvent nanofiltration. The prepared TFN membrane layers exhibited an improved surface hydrophilicity and a decreased skin layer density, which leading to a 46. 7% increment in the ethanol permeance contrasted to those COFs-free membranes, along with an increased Rhodamine B being rejected. Our prepared TFN OSN membranes exhibited an outstanding solvent resistance after being statically submersed in N, N-dimethylformamide at ambient temperature over 100 days, and after being consecutively cross-flow filtrated making use of Rose Bengal/DMF solution at ambient temperature level over 7 days, both with no considerable changes in the separation performance.
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