Electrospun Polyacrylonitrile Membrane In Situ Modified with Cellulose Nanocrystal Anchoring TiO_(2)for Oily Wastewater Recovery

作     者：Jiqing Lu Tian Bai Dong Wang Haijiao Yu Qingxiang Wang Zhaoxuan Niu Yi Hu Xueying Liu Guangping Han Wanli Cheng 

作者机构：Key Laboratory of Bio‑Based Material Science&Technology of Ministry of EducationNortheast Forestry UniversityHarbin 150040China 

出 版 物：《Advanced Fiber Materials》 (先进纤维材料（英文）)

年 卷 期：2023年第5卷第6期

页      面：2055-2068页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：the Fundamental Research Funds for the Central Universities(Grant No.2572023AW53) the Natural Science Foundation of Heilongjiang Province,China(Grant No.LH2020C039) 

主　　题：Electrospinning Cellulose nanocrystal TiO_(2) Core-shell structure Oil/water separation 

摘      要：With the increasingly urgent demand for clean water resources and the growing emission of oily wastewater,high-flux oil/water separation materials with the special wettability are progressively *** nanocrystal(CNC)from renewable biomass has been utilized to fabricate oil/water separation membranes,but it is limited to enhancing mechanical ***,a wrinkled structure with abundant–OH is constructed on polyacrylonitrile(PAN)nanofibers via the CNC hybridization *** then,a super-hydrophilic nano-TiO_(2)shell is anchored tightly on the surface of the fiber by wrinkles and–*** CNC promotes significantly the in situ growth of TiO_(2),with the TiO_(2)loading ratio of up to 5.3%.The nano-TiO_(2)shell endows the obtained film with super-hydrophilicity and underwater super-oleophobicity,resulting in a visible increase of the permeation flux for the oil/water mixture from 1483 to 11,023 L m^(−2)h^(−1).Interestingly,the hierarchical structure facilitates the demulsification for oil-in-water emulsion stabilized by surfactant,allowing the obtained membrane to exhibit eminent antifouling property and high emulsion permeability of about 3,278 L m^(−2)h^(−1).This design strategy develops next-generation anchors for targeted modification on the non-reactive substrates and provides a novel pathway for fabricating oil/water separation membranes.