g-C3N4/MXene@Ag多功能膜制备及其水净化性能研究
Study on the preparation of an advanced g-C3N4/MXene@Ag multifunctional membranes and their properties for water purification
于帆 1王俊怡 1赵瑞琪 1骆春佳 1晁敏 1颜录科1
作者信息
- 1. 长安大学材料科学与工程学院,西安 710064
- 折叠
摘要
通过真空辅助组装构建g-C3N4/MXene@Ag(CNMA)分离膜.研究表明,银纳米粒子的引入可以增强表面润湿性并优化传质通道,复合膜最高分离通量(对水包1,2-二氯乙烷乳液)为(6 812.7±106)L m-2 h-1 bar-1,最大效率可达99.7％.值得注意的是,CNMA复合膜具有显著的抗污能力,在连续使用10次后仍保持稳定的分离性能.此外,MXene@Ag材料能够优化复合膜体系的能带结构,促进电子-空穴(e--h+)的有效空间分离,从而改善光电性能,实现对有机污染物(染料、抗生素)的高效去除,其中对亚甲基蓝染料的降解效率为98％.CNMA分离膜适用于有机污染物场景下的水环境修复,满足实际污水处理要求,具有十足的发展前景.
Abstract
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.
关键词
g-C3N4/多功能膜/油水分离/光催化/水净化Key words
g-C3N4/multifunctional membrane/oil-water separation/photocatalytic/water purification引用本文复制引用
基金项目
陕西省创新能力支撑计划-科技创新团队(2023-CX-TD-43)
中央高校基本科研业务费专项资金(300102313208)
中央高校基本科研业务费专项资金(300102312403)
长安大学基础研究支持计划专项基金资助()
出版年
2024
NETL
NSTL
万方数据