膜科学与技术

Cu(tpa)/PVDF杂化超滤膜的制备及性能研究

作者：王海涛，张皓冰，奥德，师梦闪，常娜

单位： 1.天津工业大学省部共建分离膜与膜过程国家重点实验室，天津 300387；2天津工业大学环境科学与工程学院，天津 300387；3天津工业大学化学与化工学院，天津 300387

关键词： Cu(tpa)；PVDF；金属有机骨架；超滤；抗污染

出版年,卷(期):页码： 2021,41(1):40-49

摘要：

本文通过室温搅拌法合成了Cu(tpa)纳米晶，并将其作为改性剂制备了Cu(tpa)/PVDF杂化超滤膜。通过XRD、FT-IR和SEM等手段表征了Cu(tpa)纳米晶，系统研究了Cu(tpa)纳米晶及其含量对PVDF杂化超滤膜的形貌、结构以及性能的影响，采用SEM、XRD、FT-IR、静态水接触角等手段对杂化膜进行了表征，结果表明Cu(tpa)纳米晶可以有效调节PVDF膜的内部结构，当Cu(tpa)添加量为5wt%时，Cu(tpa)/PVDF膜内部全部为海绵状结构。性能测试结果显示，Cu(tpa)材料的添加可以显著提高PVDF膜的纯水通量，同时对BSA截留率保持在96%以上。此外，BSA静态吸附和恢复水通量测试表明，Cu(tpa)/PVDF膜具有良好的抗污染性能。

In this work, Cu(tpa) nanocrystals were synthesized by stirring at room temperature and were introduced into PVDF membrane as modifier to prepare Cu(tpa)/PVDF hybrid ultrafiltration membrane. Cu(tpa) nanocrystals were characterized by XRD, FT-IR and SEM. The effects of Cu(tpa) nanocrystals and their contents on the morphology, structure and properties of Cu(tpa)/PVDF hybrid ultrafiltration membrane were systematically studied. The hybrid membrane was characterized by SEM, XRD, FT-IR andstatic water contact angle technique etc.The results showed that Cu(tpa) nanocrystals effectively regulated the internal morphology of PVDF membrane. When the content of Cu(tpa) was 5 wt%, the inside of the Cu(tpa)/PVDF membrane was entirely occupied by a spongy-like structure. Properties test results showed that the additon of Cu(tpa) material can significantly increased the pure water flux of PVDF wihile maintaining its BSA rejection above 96%. In addition, the BSA static adsorption and recovery water flux test showed that the Cu(tpa)/PVDF membrane had good anti-fouling performance.

王海涛（1981—），男，河北邯郸人，博士，教授，研究方向为膜材料与膜过程，E-mail：13821646961@163.com.

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