Photocatalytic membranes have received increasing attention due to their excellent separation and photodegradation of organic contaminants in wastewater. Herein, we bound Ag-AgBr nanoparticles onto a synthesized polyacrylonitrile-ethanolamine (PAN-ETA) membrane with the aid of a chitosan (CS)-TiO₂ layer via vacuum filtration and in-situ partial reduction. The introduction of the CS-TiO₂ layer improved surface hydrophilicity and provided attachment sites for the Ag-AgBr nanoparticles. The PAN-ETA/CS-TiO₂/Ag-AgBr photocatalytic membranes showed a relatively high water permeation flux (~ 47 L·m⁻²·h⁻¹·bar⁻¹) and dyes rejection (methyl orange: 88.22%; congo red: 95%; methyl blue: 97.41%; rose bengal: 99.98%). Additionally, the composite membranes exhibited potential long-term stability for dye/salt separation (dye rejection: ~97%; salt rejection: ~6.5%). Moreover, the methylene blue and rhodamine B solutions (20 mL, 10 mg · L⁻¹) were degraded approximately 90.75% and 96.81% in batch mode via the synthesized photocatalytic membranes under visible light irradiation for 30 min. This study provides a feasible method for the combination of polymeric membranes and inorganic catalytic materials.

光催化膜因其对废水中有机污染物的出色分离和光降解作用而受到越来越多的关注。在此，我们借助壳聚糖 (CS)-TiO ₂层通过真空过滤和原位部分还原将 Ag-AgBr 纳米颗粒结合到合成的聚丙烯腈-乙醇胺 (PAN-ETA) 膜上。CS-TiO ₂层的引入提高了表面亲水性并为Ag-AgBr纳米颗粒提供了附着位点。PAN-ETA/CS-TiO ₂ /Ag-AgBr 光催化膜显示出相对较高的水渗透通量 (~ 47 L·m ^-2 ·h ^-1 ·bar ^-1) 和染料排斥（甲基橙：88.22%；刚果红：95%；甲基蓝：97.41%；玫瑰红：99.98%）。此外，复合膜在染料/盐分离方面表现出潜在的长期稳定性（染料截留率：~97%；盐截留率：~6.5%）。此外，亚甲蓝和罗丹明 B 溶液（20 毫升，10 毫克·L ^-1）通过合成的光催化膜在可见光照射 30 分钟下以分批模式降解约 90.75% 和 96.81%。该研究为聚合物膜与无机催化材料的结合提供了一种可行的方法。