The fabrication of reliable anion exchange membranes (AEMs) with superior antifouling abilities is critical in applications of electrodialysis (ED) technology. Surface modification with hydrophilic nanoparticles to improve antifouling of the membrane is an effective method. In this study, the effect of hydrophilicity of the AEMs surface on their antifouling properties was studied in detail. Commercial AEMs were modified with super-hydrophilic titanium dioxide (TiO₂) coating assisted by polydopamine (PDA) and poly (sodium 4-styrene sulfonate) (PSS). Owing to the strong adhesion of PDA, a stable TiO₂ layer was constructed on the membrane surfaces and endowed them super-hydrophilic properties. These modified AEMs exhibited slightly increased membrane area resistance compared to the pristine membrane, while after 100-min fouling experiments with sodium dodecyl benzene sulfonate (SDBS) the resistance of the 0.75 g/L-DA modified membrane increased only marginally relative to 48 % of the pristine membrane. The feasibility of rapid cleaning during ED separation operated with SDBS as the foulant without ultraviolet (UV) irradiation was also investigated. Ascribed to the super-hydrophilicity of the TiO₂ modified surface, the modified AEMs showed good fouling reversibility through simply water rinsing.

具有出色的防污能力的可靠阴离子交换膜（AEM）的制造对于电渗析（ED）技术的应用至关重要。用亲水性纳米颗粒进行表面改性以改善膜的防污性是一种有效的方法。在这项研究中，详细研究了AEMs表面的亲水性对其防污性能的影响。商业化的AEM通过在聚多巴胺（PDA）和聚（4-苯乙烯磺酸钠）（PSS）的辅助下的超亲水二氧化钛（TiO ₂）涂层改性。由于PDA具有很强的附着力，因此可以得到稳定的TiO ₂在膜表面上形成一层水，并赋予它们超亲水性。与原始膜相比，这些改性的AEM的膜面积阻力略有增加，而十二烷基苯磺酸钠（SDBS）进行100分钟的结垢实验后，0.75 g / L-DA改性膜的阻力仅相对于48％的膜有所增加。原始膜。还研究了在以SDBS作为污垢物而没有紫外线（UV）照射的ED分离过程中快速清洁的可行性。归因于TiO ₂改性表面的超亲水性，改性AEM通过简单的水冲洗就显示出良好的结垢可逆性。