State Key Lab of NBC for Civilian Protection, Beijing, 102205, China; Water Industry and Environment Engineering Technology Research Centre, Chongqing, 401311, China.
State Key Lab of NBC for Civilian Protection, Beijing, 102205, China.
Environ Res. 2022 May 15;208:112651. doi: 10.1016/j.envres.2021.112651. Epub 2022 Jan 8.
In this work, a new type of UiO-66 incorporated polysulfone (PSf) ultrafiltration (UF) membranes was fabricated to enhance antifouling properties and heavy metal ions removal efficiency. The UF membranes incorporating different loadings of the UiO-66 filler were prepared via the classical phase inversion process. These membranes unveiled enhanced hydrophilicity, porosity, water uptake, zeta potential, mechanical strength, permeability, and HA removal ratios due to the incorporation of hydrophilic UiO-66 fillers. Particularly, HA rejection ratios were observed to be approximately 93% for all the modified membranes, which was attributed to electrostatic repulsion interactions between the hydrophilic groups of HA and UiO-66. Moreover, the antifouling abilities of the modified membranes were evaluated and found to be much better with a high flux recovery ratio (FRR) of about 88% when compared to the blank PSf membrane (only around 34%). Moreover, the UiO-66 incorporated membranes were highly-effective in the removal of contaminants like heavy metal ions (Sr, Pb, Cd, and Cr) and HA at the same time. Overall, the PSf UF membranes incorporating UiO-66 opened up a new avenue to enhance the membrane hydrophilicity, permeability, antifouling properties as well as heavy metal ions removal abilities.
在这项工作中，制备了一种新型的 UiO-66 负载聚砜（PSf）超滤（UF）膜，以提高抗污染性能和重金属离子去除效率。通过经典的相转化法制备了不同负载量 UiO-66 填料的 UF 膜。由于亲水性 UiO-66 填料的加入，这些膜具有增强的亲水性、孔隙率、吸水率、Zeta 电位、机械强度、渗透性和 HA 去除率。特别是，所有改性膜的 HA 截留率均约为 93%，这归因于 HA 和 UiO-66 中亲水性基团之间的静电排斥相互作用。此外，还评估了改性膜的抗污染能力，与空白 PSf 膜（仅约 34%）相比，其通量恢复率（FRR）高达约 88%，表明其具有更好的抗污染能力。此外，UiO-66 负载的膜在同时去除污染物（如重金属离子（Sr、Pb、Cd 和 Cr）和 HA）方面也非常有效。总之，UiO-66 负载 PSf UF 膜为提高膜的亲水性、渗透性、抗污染性能和重金属离子去除能力开辟了新途径。
