采用改性锆基金属有机骨架设计具有光催化抗污染性能的新型聚偏氟乙烯/TiO/UiO-66-NH 膜。
Designing of a novel polyvinylidene fluoride/TiO/UiO-66-NH membrane with photocatalytic antifouling properties using modified zirconium-based metal-organic framework.
机构信息
School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China E-mail:
State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Lab, Chemical Engineering Research Center, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
出版信息
Water Sci Technol. 2021 Nov;84(9):2380-2393. doi: 10.2166/wst.2021.381.
Novel polyvinylidene fluoride/TiO/UiO-66-NH (PVDF/TiUN) membranes were produced by the delay phase separation method via introducing the TiO/UiO-66-NH (TiUN) nanocomposite into PVDF casting solution. Interconnection of TiO and UiO-66-NH improved photocatalysis capacity and endowed PVDF/TiUN membranes with self-cleaning capability. Quantitative measurements showed that, firstly, PVDF/TiUN membranes exhibited improved photodegradation kinetics and efficiency (up to 88.1%) to Rhodamine B (RhB). Secondly, the performances of bovine serum albumin (BSA) rejection and permeation of PVDF/TiUN membranes outperformed those of other check samples, indicating enhanced hydrophilicity. Thirdly, rejection rate of BSA reached a breathtaking 98.14% and flux recovery ratio (FRR) of BSA reached a breathtaking 95.37%. Thus, given their excellent anti-contamination property and separation performance, the PVDF/TiUN membrane is very likely to be a novel water treatment membrane.
新型聚偏氟乙烯/二氧化钛/UiO-66-NH（PVDF/TiUN）膜是通过在 PVDF 铸膜液中引入 TiO/UiO-66-NH（TiUN）纳米复合材料，采用延迟相分离法制备的。TiO 和 UiO-66-NH 的相互连接提高了光催化能力，使 PVDF/TiUN 膜具有自清洁能力。定量测量表明，首先，PVDF/TiUN 膜对 Rhodamine B（RhB）表现出提高的光降解动力学和效率（高达 88.1%）。其次，PVDF/TiUN 膜的牛血清白蛋白（BSA）截留率和渗透性能优于其他对照样品，表明其亲水性增强。第三，BSA 的截留率达到了惊人的 98.14%，BSA 的通量恢复率（FRR）达到了惊人的 95.37%。因此，鉴于其优异的抗污染性能和分离性能，PVDF/TiUN 膜很可能成为一种新型水处理膜。
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