文献类型：期刊文献

英文题名：Smart wood membrane with reversible photo-responsive wettability for intelligent oil-water separation

作者：Shen, Jie[1];Yuan, Yi-Zhong[1];Yu, Hui-Mei[1];Tian, Xiao-Hui[1];Zhang, Yao[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2026

卷号：531

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20260720088636);WOS:【SCI-EXPANDED(收录号:WOS:001695249200001)】；

基金：The authors gratefully acknowledge for the financial support provided by the Fundamental Research Funds for the Central Universities of China (Grant No. 22A201514002) and Chinese Government Scholarship (Grant No. 201806745035).

语种：英文

外文关键词：Azobenzene; Photo-responsive; Oil/water separation; High efficiency

摘要：Oily wastewater, generated from the indiscriminate discharge of industrial wastewater and frequent oil spills, has led to numerous environmental problems and poses a severe threat to aquatic ecosystems. Among the various solutions, membrane separation technology is an efficient, environmentally friendly, and cost-effective method for treating oily wastewater. In this study, photo-controlled wettability smart wood membranes were prepared by grafting 4-amino-4 '-hydroxyazobenzene (AH-Azo) onto Basswood (BW) via a controllable substitution reaction, followed by grafting hydrophobic groups (trimethylchlorosilane, trichloro(1H,1H,2H,2H-perfluorooctylsilane)) onto the hydroxyl group at the other end of AH-Azo. Based on the photo-responsive reversible transition of Azo, smart wood membranes, incorporating two distinct hydrophobic groups, successfully achieve effective separation of oily wastewater through the switching of ultraviolet (UV) and visible light. Under alternating UV and visible light, the membranes exhibit reversible wettability switching, enabling on-demand separation of both oil/water mixtures and stable water-in-oil emulsions with fluxes up to 7 & times; 104 and 7300 L & sdot;m-2 & sdot;h-1, respectively, and separation efficiencies above 98.7%. Hydrophobic terminal groups regulate the light driven wettability transition, offering a scalable route to biomass derived membranes for oily wastewater separation.