标题：Photoinduced superwetting membranes for separation of oil-in-water emulsions
作者：Yue R.-Y.; Guan J.; Zhang C.-M.; Yuan P.-C.; Liu L.-N.; Zaheer Afzal M.; Wang S.-G.; Sun X.-F.
作者机构：[Yue, R.-Y] Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong Universit 更多
通讯作者地址：[Sun, X.-F] Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong Universit 更多
来源：Separation and Purification Technology
关键词：Oil/water separation; Photoinduced; Ultrafiltration; Visible light; ZIF-8/GO composite
摘要：The separation of oil/water emulsion has become a pressing worldwide problem. In this study, a novel type of photoinduced separation membrane was prepared via layer-by-layer (LBL) method of ZIF-8/GO composite. By integrating the unique physical and chemical properties of ZIF-8 and GO, the ZIF-8/GO membrane exhibits superior superoleophobicity under visible light and underwater anti-fouling for efficient oil rejection from water. We found that the ZIF-8/GO membrane permeation flux was 110 ± 6 L m−2 h−1 under light irradiation, which was higher than the permeation flux of membranes without irradiation (50 ± 6 L m−2 h−1). For toluene, the removal rate was about 100% at the first time, with new benzyl alcohol and benzaldehyde products detected in the filtrate, indicating that toluene was degraded on the ZIF-8/GO membrane surface. Continuous separation performed using filtration apparatus demonstrates a high separation capacity, with long-term membrane stability. The high water flux, high separation capacity and capacity for large-scale preparation of the ZIF-8/GO membrane, shows great potential for industrial application in the treatment of oil-containing wastewater. © 2020 Elsevier B.V.