Published: Jan. 1, 2023

Incorporating nanomaterials for a thin film nanocomposite (TFN) layer has been verified effective to improve the separation performance of nanofiltration (NF) membranes, whereas poor compatibility between and polyamide (PA) matrix leads decrease in salt rejection pollution resistance. In this study, inspired by new interface-bridging idea, Ti3C2Tx was bonded with tannic acid-Fe(III) (TA-Fe(III)) complexes, then incorporated into PA first time obtain novel TFN NF membrane. The introduction TA-Ti3C2Tx found effectively reduce diffusion piperazine, thus result induction thinner, lower roughness, more hydrophilic, defect-free layer. With addition only 0.015 wt% TA-Ti3C2Tx, membrane obtained highest water permeability 12.17 L m-2 h-1 bar-1, almost twice that pristine membrane, high Na2SO4 above 97%. addition, TA-Ti3C2Tx-filled membranes were exhibit excellent antifouling pressure resistance durability, which is crucial practical application salinity treatment. This study provides an strategy tailor interfacial microstructural nanoparticle-filled superior divalent-salinity-water separation.

Language: Английский