文献类型：期刊文献

英文题名：PVDF membrane with in-situ formed akaganeite (β-FeOOH) nanorods for excellent photo-Fenton self-cleaning and effective oil-in-water emulsion separation

作者：Qian, Jiang[1,2];Gao, Shiyu[3];Sheng, Shiqi[3];Zhou, Binjie[3];Yang, Haijun[4];Chen, Liang[5];Mu, Liuhua[5];Wang, Minglei[6]

机构：[1]Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Sch Chem & Chem Engn,New Cornerstone Sci Lab, State Key Lab Synergist Chem Bio Synth, Shanghai 200240, Peoples R China;[2]Shanghai Jiao Tong Univ, Natl Ctr Translat Med, Shanghai 200240, Peoples R China;[3]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[4]Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China;[5]Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China;[6]Donghua Univ, Coll Mat Sci & Engn, Shanghai 201620, Peoples R China

年份：2026

卷号：758

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20263421330317);Scopus(收录号：2-s2.0-105047531712);WOS:【SCI-EXPANDED(收录号:WOS:001853813500001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (12005062, 12305408, and 12405036).

语种：英文

外文关键词：Radiation-induced graft polymerization; beta-FeOOH nanorods; Photo-Fenton; Self-cleaning; Antifouling; Oil-water separation

摘要：Membrane fouling reduces permeability and shortens membrane lifespan, limiting the practical application of polymeric membranes in oily wastewater treatment. Hydrophilic/underwater oleophobic membranes with photocatalytic properties have attracted increasing attention due to their antifouling and self-cleaning capabilities. However, developing oil/water separation membranes with both catalytic stability and high photocatalytic efficiency remains a significant challenge. In this study, a multifunctional PVDF membrane with excellent antifouling performance and visible-light-driven photo-Fenton catalytic activity was fabricated via electron beam pre-irradiation grafting followed by in-situ mineralization of beta-FeOOH nanorods, achieving a loading content of 19.8 wt%. The introduction of grafted polyacrylic acid chains and uniformly distributed beta-FeOOH nanorods enhanced the membrane's hydrophilicity (WCA approximate to 23.0 degrees) and underwater oleophobicity (OCA > 140 degrees), resulting in high oil/water separation efficiency (>98%) and elevated permeability (similar to 1100 L h(-1)m(-2) bar(-1)), nearly double that of the pristine PVDF membrane. The covalently bonded polyacrylic acid chains not only stabilize the beta-FeOOH nanorods but also boost their catalytic performance via enhanced interfacial charge transfer and electron enrichment at Fe sites, thereby facilitating the Fe3+/Fe(2+)redox cycle. Consequently, the beta-FeOOH@PVDF membrane demonstrated excellent degradation performance toward organic pollutants and nearly complete flux recovery through self-cleaning. Theoretical calculations further confirmed polyacrylic acid-induced band gap narrowing and charge transfer acceleration, offering insights into the photocatalytic activity enhancement. This work offers a practical and scalable strategy for constructing hydrophilic/underwater oleophobic membranes with exceptional antifouling and self-cleaning performance, and will benefit various environmental remediation applications.