The discharge of dye wastewater poses a serious threat to the environment and human health. Membrane separation technology based on electrostatic adsorption is considered an effective method for dye removal. However, its long-term application is hindered by the saturation of adsorption sites. In this study, an anionic dye-adsorbing membrane was fabricated via a codeposition strategy, combined with patterned silver gel to impart conductivity. Acting as a cathode, the membrane electrolyzes water to generate OH? ions at the interface that deprotonate the functional groups, thereby releasing the adsorbed dyes in situ. The membrane exhibits excellent dye rejection performance and enables sustainable separation over multiple cycles under this electro-assisted cleaning. This strategy avoids the use of additional reagents or secondary chemical pollutants, offering an efficient and sustainable membrane separation solution for the treatment of dye-containing wastewater.
Pallot, H., Isloor, A.M. and Ismail, A.F. (2025) Effective Separation of Agrochemicals and Textile Dyes from Polluted Aqueous Solution Employing Ternary ZnCoFe Layered Double Hydroxide Incorporated Polyethersulfone Hollow Fiber Ultrafiltration Membrane. Chemical Engineering Journal, 520, Article 165254. https://doi.org/10.1016/j.cej.2025.165254
Liu, C., Zhu, L., Zhang, Y., Hu, W., Shen, Y., Jin, H., et al. (2025) Facile Fabrication of High-Performance Membrane with 2D GO Nanosheet in Membrane Skin by Pic-Assisted NIPS Method for Dye/Salt Separation. Journal of Membrane Science, 733, Article 124339. https://doi.org/10.1016/j.memsci.2025.124339
Liu, Y., Luo, F., Zheng, K. and Zhou, S. (2025) Novel Polyfurfuryl Alcohol Loose Nanofiltration Membrane for Efficient Dye/Salt Selective Separation. Environment International, 202, Article 109622. https://doi.org/10.1016/j.envint.2025.109622
Wu, D., li, H., Pan, G., Wang, M., Yu, W., Wang, G., et al. (2024) Sustainable Superwetting Membrane for Effective Separation of Oil-Water Emulsion and Dye Removal. Separation and Purification Technology, 343, Article 127084. https://doi.org/10.1016/j.seppur.2024.127084
Wang, Z., Yuan, S., Wang, D., Zhang, N., Shen, Y. and Wang, Z. (2025) n-Oxide Zwitterionic-Based Antifouling Loose Nanofiltration Membranes with Superior Water Permeance and Effective Dye/Salt Separation. Environmental Science & Technology, 59, 5856-5865. https://doi.org/10.1021/acs.est.5c00916
Yao, N., Ji, S., Xing, Y., Chen, J., Cheng, Y., Ruan, X., et al. (2025) Green Resource Utilization of Textile and Dyeing Wastewater: Fabrication of a Chlorine-Resistant ZIF-L/PDA Loose Nanofiltration Membrane via Interfacial Polymerization and Its Performance in Dye/Salt Separation. Separation and Purification Technology, 377, Article 134193. https://doi.org/10.1016/j.seppur.2025.134193
Liu, X., Zhang, J., Wu, H., Li, F., Liu, Z., Ma, Y., et al. (2025) Synergistic Antifouling PBI Nanofiltration Membrane via Ag@UiO-66-NH 2 Immobilization and Hydrophilic Polymer Brush Grafting for Dye/Salt Separation. Desalination, 613, Article 119067. https://doi.org/10.1016/j.desal.2025.119067
Liu, Y., Zhu, J., Chi, M., Eygen, G.V., Guan, K. and Matsuyama, H. (2025) Comprehensive Review of Nanofiltration Membranes for Efficient Resource Recovery from Textile Wastewater. Chemical Engineering Journal, 506, Article 160132. https://doi.org/10.1016/j.cej.2025.160132
Hao, J., Li, J., Wang, L., He, M., Wang, J., Wang, X., et al. (2025) Electrically Induced Modulation of Pore Size and Surface Potential in Conductive Nanofiltration Membranes for Enhanced Dye/Salt Selective Separation. Journal of Membrane Science, 724, Article 123993. https://doi.org/10.1016/j.memsci.2025.123993
Li, H., Xiao, S., Zhao, X., Yuan, J. and Yu, S. (2025) Preparation of High-Flux Loose Nanofiltration Membranes for Efficient Dye/Salt Separation by Controlling Interface Polymerization through Physical and Chemical Dual Constraints. Separation and Purification Technology, 362, Article 131720. https://doi.org/10.1016/j.seppur.2025.131720
Li, R., Cao, S., Feng, X., Don, J., Guo, X., Wang, H., et al. (2022) Guanidinium-Based Loose Nanofiltration Membranes for Dye Purification and Chlorine Resistance. Separation and Purification Technology, 300, Article 121941. https://doi.org/10.1016/j.seppur.2022.121941
Nie, M.X., Zheng, Z., Song, F., Lu, J. and Zhan, X. (2025) Construction of Highly Permeable Polyhedral Oligomeric Silsesquioxanes/Polyamide Nanofiltration Membranes via Liquid-Solid Interfacial Polymerization for Dye Desalination. Journal of Membrane Science, 733, Article 124293. https://doi.org/10.1016/j.memsci.2025.124293
Yu, W., Liu, Y., Xu, Y., Li, R., Chen, J., Liao, B.Q., et al. (2019) A Conductive PVDF-Ni Membrane with Superior Rejection, Permeance and Antifouling Ability via Electric Assisted In-Situ Aeration for Dye Separation. Journal of Membrane Science, 581, 401-412. https://doi.org/10.1016/j.memsci.2019.03.083
Kim, Y.J., Jang, J.K., Yoo, S.Y., Lee, J. and Park, H.B. (2025) Enhanced Dye Adsorption and Separation Using Iterative Growth of Sulfonated UiO-66 on PTFE Membranes. Journal of Membrane Science, 719, Article 123731. https://doi.org/10.1016/j.memsci.2025.123731
Hui, Q., Diao, Y., Li, Z., Wang, F., Guan, Z., Wang, C., et al. (2025) Organic–Inorganic Mixed Matrix Membrane Constructed by Chitosan and Red Mud Based γ-AlOOH Hierarchical Porous Microspheres as Superior Adsorbents for Anionic Dye and Microplastics. Separation and Purification Technology, 371, Article 133245. https://doi.org/10.1016/j.seppur.2025.133245
Gupta, K., Yasa, S.R., Khan, A., Sharma, O.P. and Khatri, O.P. (2022) Charge-Driven Interaction for Adsorptive Removal of Organic Dyes Using Ionic Liquid-Modified Graphene Oxide. Journal of Colloid and Interface Science, 607, 1973-1985. https://doi.org/10.1016/j.jcis.2021.10.017
Wan, H., Zhu, X., Wang, J., Cao, F., Zhang, Y., Yao, Z., et al. (2025) Adsorptive Nanofibrous Membranes for Bidirectional Removal of Cationic and Anionic Dyes. Separation and Purification Technology, 361, Article 131515. https://doi.org/10.1016/j.seppur.2025.131515
Qi, Y., Chen, Y., Liu, H., Zhao, J., Yu, Y., Wang, R., et al. (2024) Construction of Highly Hydrophilic PAN-co-IA/CNTs@TA Composite Membrane with Large Flux and High Retention for Purification of Dye Wastewater. Chemical Engineering Journal, 487, Article 150752. https://doi.org/10.1016/j.cej.2024.150752
Fang, J., Chen, Y., Fang, C. and Zhu, L. (2022) Regenerable Adsorptive Membranes Prepared by Mussel-Inspired Co-Deposition for Aqueous Dye Removal. Separation and Purification Technology, 281, Article 119876. https://doi.org/10.1016/j.seppur.2021.119876
Gan, S., Li, H., Zhu, X., Liu, X., Wei, K., Zhu, L., et al. (2023) Constructing Scalable Membrane with Tunable Wettability by Electrolysis-Induced Interface pH for Oil-water Separation. Advanced Functional Materials, 33, Article 2305975. https://doi.org/10.1002/adfm.202305975
Zhou, Q., Liu, S., She, J., Wang, X., Lu, X. and Wu, C. (2022) In-Situ Aeration-Assisted Polydopamine/Polyethyleneimine Copolymerization and Deposition for Rapid and Uniform Membrane Modification. Journal of Membrane Science, 657, Article 120662. https://doi.org/10.1016/j.memsci.2022.120662
Li, Z., Hu, K. and Feng, X. (2021) Concentration of Potassium Acetate Solutions via Sweeping Gas Pervaporation Using TFC Membranes Comprising of a PDA Sublayer and PEI/PAA Bilayers. Separation and Purification Technology, 277, Article 119429. https://doi.org/10.1016/j.seppur.2021.119429
Shi, X., Zhang, Q., Wang, Z., Bi, Q. and Lin, Y. (2025) Acetone-Modulated Reverse Interfacial Polymerization Was Employed to Prepare PEI/PDA Positively Charged Composite Nanofiltration Membranes for Mg2+/Li+ Separation. Journal of Membrane Science, 720, Article 123780. https://doi.org/10.1016/j.memsci.2025.123780