| abstract |
The invention discloses a preparation method of a zinc-coordinated organic nano-particle hybrid polyamide membrane. Polyamine is used as a monomer molecule, zinc nitrate hexahydrate is a metal ion compound, and dopamine is a biomimetic binder, and the preparation is mixed with water. solution, dip-coating it on the surface of the porous support membrane, and then dipping in an aqueous solution containing 2-methylimidazole to form zinc-coordinated organic nanoparticles in situ, and finally prepare zinc-coordinated organic nanoparticles by interface crosslinking of polybasic acid chloride monomers Particle hybrid polyamide membrane. Using the unique nano-microstructure of zinc-coordinated organic particles, nano-channels that are favorable for water permeation and selective retention of organic molecules are formed in the polyamide membrane, and high water permeability and stable separation selectivity can be obtained. The preparation method of the invention is simple and feasible, the particles are formed in-situ during the film-making process, the particles are uniformly and stably distributed in the film, the preparation cost is low, and the invention has good industrial application prospects. |