具有ZnS负载富羧基PVDF复合膜的制备及乳液分离和光催化染料降解  

Preparation of ZnS-loaded Carboxy-Rich PVDF Composite Membranes and Emulsion Separation and Photocatalytic Dye Degradation

作　　者：施明惠 李成才[1,2,3] 徐毅辉 高达利[4] 姜超[4] 张师军 SHI Minghui;LI Chengcai;XU Yihui;GAO Dali;JIANG Chao;ZHANG Shijun(Zhejiang Provincial Key Laboratory of Fiber Materials and Manufacturing Technology,Zhejiang Sci-Tech University,Hangzhou,310018,China;Zhejiang Sci-Tech University Huzhou Research Institute Co.,LTD,Huzhou 313000,China;Zhejiang Provincial Innovation Center of Advanced Textile Technology,Keqiao 312030,China;SINOPEC(Beijing)Research Institute of Chemical Industry,Beijing 100000,China)

机构地区：[1]浙江理工大学,浙江省纤维材料和加工技术研究重点实验室,浙江杭州310018 [2]浙江理工大学湖州研究院,浙江湖州313000 [3]浙江省现代纺织技术创新中心(鉴湖实验室),浙江柯桥312030 [4]中石化(北京)化工研究院有限公司,北京100000

出　　处：《水处理技术》2023年第6期68-72,共5页Technology of Water Treatment

基　　金：国家重点研发计划项目(2021YFB3801502)、中国石化科技开发项目(420053-5)。

摘　　要：含大量有机染料的含油废水对环境的污染日益严重。超润湿材料具有特殊的润湿性,在膜分离技术中得到了广泛的应用,其优异的乳液分离性能与特定的表面形貌有关。本研究先通过溶液转化法制备了聚偏氟乙烯/乙烯-co-马来酸酐共聚物(PVDF/PEMA)膜,后依次进行酸碱处理制备出富羧基离子的PVDF复合膜,最后在膜表面原位沉积ZnS微纳米颗粒。制备的复合膜在水中表现出超疏油性,对含植物油的水包油乳液的分离效率达到97%以上。此外,该膜具有自洁性和抗污染性。对亚甲基蓝降解效率高达98%以上,重复5次吸附-降解实验表面该膜具有优异的可重复使用性。因此,该膜在乳液分离和染料降解方面具有潜在的应用前景。Oily wastewater containing a large number of organic dyes is increasingly polluting the environment.Super-wetting materials have special wetting properties and are widely used in membrane separation technology,and their excellent emulsion separation properties are related to specific surface morphology.In this study,polyvinylidene fluoride/ethylene-co-maleic anhydride copolymer(PVDF/PEMA)membrane was prepared by solution conversion method,followed by acid-base treatment to prepare a carboxyl ion-rich PVDF composite membrane,and finally ZnS micro and nanoparticles were deposited in situ on the surface of the membrane.The prepared composite membrane exhibits super-oilhobicity in water,and the separation efficiency of the oil-in-water emulsion containing vegetable oil reaches more than 97%.In addition,the membrane is self-cleaning and resistant to contamination.The degradation efficiency of methylene blue is as high as 98%,and the membrane has excellent reusability on the surface of the adsorption-degradation experiment after repeating 5 times.Therefore,the membrane has potential application prospects in emulsion separation and dye degradation.

关 键 词：聚偏氟乙烯 乙烯-co-马来酸酐共聚物 硫化锌 油水分离 染料降解 

分 类 号：TQ028.8[化学工程]