MXene/ZnO导电分离膜的制备及性能
Preparation and Performance of MXene/ZnO Conductive Separation Membrane
刁延芳 1邵会菊 2张芳芳 1李康 1高伟1
作者信息
- 1. 贵州大学材料与冶金学院,贵州贵阳 550000
- 2. 贵州省材料产业技术研究院,贵州贵阳 550000
- 折叠
摘要
为提高聚醚砜(PES)膜的亲水性能,以不同碱处理温度下的苯乙烯-马来酸酐共聚物(SMANa)作为添加剂,通过非溶剂诱导相分离法(NIPS)制备了SMANa/PES复合膜.在此基础上,利用真空抽滤的方法制备MXene/ZnO膜,对分离膜的结构、形貌和分离性能进行测试.结果表明:SMA转变为SMANa的同时,改善了与PES的相容性.当MXene的负载量为0.18 g/m2时,电导率高达0.73 S/cm.当ZnO的含量为15%时,水接触角由38.5°降低至22.4°.ZnO的加入不仅可以有效阻止MXene层与层之间的堆叠,而且还赋予导电分离膜优异的亲水性能.当ZnO含量为15%时,MXene/ZnO膜对刚果红染料的截留率由0 V的58.84%增加到1 V的77.07%,且渗透通量没有较大变化.
Abstract
To improve the hydrophilicity of polyethersulfone(PES)membranes,SMANa/PES composite membranes were prepared by non solvent induced phase separation(NIPS)using styrene maleic anhydride copolymer(SMANa)at different alkali treatment temperatures as an additive.On this basis,the MXene/ZnO membrane was prepared using vacuum filtration method,and the structure,morphology,and separation performance of the separation membrane were tested.The results showed that the transformation of SMA to SMANa was accompanied by improved compatibility with PES.The electrical conductivity was as high as 0.73 S/cm when the loading of MXene was 0.18 g/m2.When the content of ZnO further increased to 15%,the water contact angle decreased from 38.5° to 22.4°.The addition of ZnO not only effectively prevents the stacking between MXene layers,but also endows the conductive separation membrane with excellent hydrophilicity.When the ZnO content was 15%,the rejection rate of MXene/ZnO membrane for Congo red dye increased from 58.84%at 0 V to 77.07%at 1 V,and the permeate flux did not change greatly.
关键词
聚醚砜/MXene/ZnO/导电分离膜Key words
Polyethersulfone/MXene/ZnO/Conductive separation membrane引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据