PES/ZnO@rGO共混超滤膜的制备及其性能  

Preparation and performance of PES/ZnO@rGO blend ultrafiltration membranes

作　　者：朱吉凯 丁长坤 秦茜雯 薛蔓 田盈盈 ZHU Jikai;DING Changkun;QIN Xiwen;XUE Man;TIAN YingYing(State Key Laboratory of Separation Membranes and Membrane Processes,School of Materials Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学材料科学与工程学院省部共建分离膜与膜过程国家重点实验室,天津300387

出　　处：《膜科学与技术》2022年第2期47-55,63,共10页Membrane Science and Technology

基　　金：天津市中空纤维膜材料与膜过程重点实验室开放课题项目(2021TGUZKXWM2-1)。

摘　　要：采用溶剂热法合成了ZnO为颗粒状形貌的ZnO@rGO复合材料.以N,N-二甲基乙酰胺(DMAc)及N-甲基吡咯烷酮(NMP)为溶剂,聚乙二醇(PEG4000)为致孔剂,采用非溶剂致相分离法(NIPS)制备了聚醚砜(PES)/ZnO@rGO共混超滤膜,研究了ZnO@rGO复合材料的含量对PES共混膜结构与性能的影响.结果表明:PES/ZnO@rGO共混膜的水接触角从纯PES膜的83.7°下降到66.2°,纯水通量达到198.12 L/(m^(2)·h),是纯PES膜纯水通量的4倍,对牛血清蛋白(BSA)的截留率保持在96%以上,通量恢复率从69%增加到88%,抗污染性能较纯PES膜明显提高.共混膜对甲基蓝(MB)的光催化降解效率从68%提高到93%,显示出优异的光催化降解能力.In this work, ZnO@rGO composites were synthesized by solvothermal method, in which ZnO was granular morphology. Using N,N-dimethylacetamide(DMAc) and 1-methy1-2-pyrrolidinone(NMP) as solvents, polyethylene glycol(PEG4000) as pore-forming agent, the polythersulfone(PES)/ZnO@rGO blend membranes were prepared by non-solvent phase separation(NIPS) method. The effect of the addition contents of ZnO@rGO on the structure and performance of PES blend membranes was investigated. The results showed that the water contact angles could change from 83.7° of the PES/ZnO@rGO blend membranes to 66.2° of the pure PES membrane to, and the pure water flux of the blend membranes could achieve 198.12 L/(m^(2)·h), which is 4 times larger than that of the pure PES membrane. In addition, the BSA rejection of PES/ZnO@rGO blend membranes is above 96% and the flux recovery rate increased from 69% to 88%, and the anti-fouling performance of the blend membranes could be improved significantly. Furthermore, the photocatalytic activity of PES/ZnO@rGO blend membranes for MB increased from 68% to 93%, showing excellent photocatalytic ability.

关 键 词：氧化锌 还原氧化石墨烯 聚醚砜 共混膜 光催化 抗污染 

分 类 号：TQ028.8[化学工程]