Graphene oxide (GO), silver (Ag), and polyamidoamine (PAMAM) have individually proven effective at enhancing the properties of thin-film nanocomposite (TFN) membranes. Here, we report their synergic efficacy for water purification and desalination purposes. We fabricate TFN membranes filled with Ag-PAMAM-decorated graphene oxide (GO@PAMAM@Ag) and characterize their surface hydrophilicity, water permeability, salt and dye retentions, and antibacterial and antifouling capacities. We show that TFNs filled with 0.02 wt% GO@PAMAM@Ag have a contact angle of ~26°, down from ~53° in the pristine form, exhibiting strong antifouling properties. Molecular weight cut-off values of the membranes indicate that the filler considerably reduces the pore size of the membranes. We show that the filler improves the rejection capacity of TFN membranes against Na₂SO₄ and Cr(NO₃)₃ and imparts to the membranes excellent dye retention (>99% for Viola Crystallina) and inhibitory effects against two main causative agents of bloodstream infections, Escherichia coli and Staphylococcus aureus. Overall, GO@PAMAM@Ag-filled TFN membranes exhibit quality performance across several indicators showing great promise for use in water treatment facilities.

氧化石墨烯（GO），银（Ag）和聚酰胺胺（PAMAM）已被单独证明有效地增强了薄膜纳米复合材料（TFN）膜的性能。在这里，我们报告了它们在水净化和脱盐方面的协同功效。我们制造填充有Ag-PAMAM装饰的氧化石墨烯（GO @ PAMAM @ Ag）的TFN膜，并表征其表面亲水性，水渗透性，盐和染料保留量以及抗菌和防污能力。我们显示，填充有0.02 wt％GO @ PAMAM @ Ag的TFN的接触角为〜26°，低于原始形式的〜53°，表现出强大的防污性能。膜的分子量截留值表明填料显着减小了膜的孔径。我们表明，填料提高了TFN膜对Na的排斥能力₂ SO ₄和Cr（NO ₃）₃赋予膜优异的染料保持力（Viola Crystallina> 99％）和对两种主要的血液感染致病菌（大肠杆菌和金黄色葡萄球菌）的抑制作用。总体而言，GO @ PAMAM @ Ag填充的TFN膜在多个指标上均表现出优异的性能，显示出有望在水处理设施中使用。