Loose nanofiltration (NF) membranes with a considerable water permeance are highly desired for the separation of hazardous dyes and salts from saline textile wastewater. However, further improving the water permeance of loose NF membranes with superior sieving capabilities remains a daunting challenge. Herein, a novel amino acid-based loose polyamide NF membrane was successfully developed via an interfacial polymerization (IP) process between arginine (Arg) and trimesoyl chloride (TMC) on PES substrates. The negatively charged, hydrophilic surface and ultrathin (87 nm) polyamide layer, afforded the membrane with a high separation performance. The optimal Arg/TMC membrane displayed an ultrahigh pure water permeance of 130.4 L m⁻² h⁻¹ bar⁻¹ with high dye rejection (Congo red: 99.6%, Direct Red 23: 99.0%, Reactive Blue 2: 98.5%, Reactive Orange 16: 95.2%), and low salt rejection (3.8% for NaCl and 7.2% for Na₂SO₄). In addition, the Arg/TMC membrane maintained good antifouling properties. l-Glutamine and l-Serine were also utilized as aqueous monomers, confirming the universality of the amino acids for the facile preparation of high-performance loose NF membranes. By choosing amino acids with suitable R groups, it is expected to develop amino acid-based NF membranes for the separation of various dyes.

从含盐纺织废水中分离有害染料和盐类非常需要具有相当透水性的松散纳滤 (NF) 膜。然而，进一步提高具有优异筛分能力的松散纳滤膜的透水性仍然是一项艰巨的挑战。在此，通过精氨酸 (Arg) 和均苯三甲酰氯 (TMC) 在 PES 基底上的界面聚合 (IP) 工艺，成功开发了一种新型氨基酸基松散聚酰胺 NF 膜。带负电荷的亲水表面和超薄 (87 nm) 聚酰胺层为膜提供了高分离性能。^{最佳的 Arg/TMC 膜表现出 130.4 L m −2}  h ⁻¹  bar ⁻¹的超高纯水渗透率具有高染料排斥率（刚果红：99.6%、直接红 23：99.0%、活性蓝 2：98.5%、活性橙 16：95.2%）和低脱盐率（NaCl 为 3.8%，Na 2 SO 4_为7.2 _% ). 此外，Arg/TMC 膜保持了良好的防污性能。l-谷氨酰胺和l-丝氨酸也被用作水性单体，证实了氨基酸在轻松制备高性能松散 NF 膜方面的普遍性。通过选择具有合适R基团的氨基酸，有望开发出用于分离各种染料的基于氨基酸的纳滤膜。