New Antifouling Dual Iron-Based Photo-Fenton Catalytic Membrane Dedicated to Long-Term Treatment of Oils and Dyes

作者：Huasheng Yang, Yingying Xiao, Qi Chen, Meiyan Li, Qian Xiang, Jingjing Ren, Yanzong Zhang, Gang Yang, Fei Shen, Yan Liu · 发表于：Nano Letters · 年份：2025 · DOI：10.1021/acs.nanolett.4c05683 · 被引用次数：6 · 研究领域：Membrane Separation Technologies、Advanced oxidation water treatment、Electrohydrodynamics and Fluid Dynamics

Combining the photo-Fenton catalytic reaction with membrane separation technology can effectively treat oils and dyes in water. However, single iron-based catalysts suffer from limited photogenerated carrier utilization and slow Fe 3+ /Fe 2+ redox reactions, leading to membrane contamination. In this study, iron oxyhydroxide and Prussian blue were grown on a PVDF membrane, optimizing electron transfer to improve the catalytic efficiency (the methylene blue degradation efficiency was nearly 50% in 10 min and the reaction rate constant was 0.094 min –1 ). The membrane flux for multicomponent oily wastewater reached 965.3 L·m –2 h –1, with an over 99.9% dye removal rate. The flux of actual printing and dyeing wastewater after continuous filtration for 60 min reached 373.6 L·m –2 h –1 . Moreover, the catalytic and filtration mechanisms were explained in detail. The strategy provided in this study has certain practical application value in printing and dyeing wastewater treatment.