Study on the preparation of an advanced g-C3N4/MXene@Ag multifunctional membranes and their properties for water purification
The g-C3N4/MXene@Ag(CNMA)separation membrane was constructed by vacuum-assisted self-assembly.It is shown that the introduction of Ag nanoparticles can optimize the surface wettability and transport channels of the membranes.The separation flux(for 1,2-dichloroethane/water emulsions)of the composite membrane is up to(6 812.7±106)L/(m2·h·bar)with a maximum separation efficiency of 99.7％.Notably,the CNMA separation membrane has remarkable anti-fouling performance and maintains stable separation properties after 10 consecutive uses.In addition,MXene@Ag can enhance the energy band structure,improve the photoelectric properties,provide positive spatial sepa-ration of electrons-holes(e--h+)and achieve efficient removal of organic pollutants(dyes,antibiotics).The efficiency of the membrane in degrading methylene blue dye is 98％.The CNMA functional separation membrane is suitable for water environment remediation under organic pollutant scenarios.This work meets the actual wastewater treatment re-quirements and has a promising development.
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