Ultra-thin loose thin-film composite (TFC) nanofiltration membrane with potential high permeability is an urgent need in water purification. However, its tailor-made structure and morphology remains a challenge. Herein, a novel composite membrane was proposed for the first time by introducing 3,5-diamino-1,2,4 triazole (GAZ) and piperazine with trimesoyl chloride (TMC) into polyamide layer. The physic-chemical properties of the membranes prepared with various GAZ concentrations in the aqueous phase were characterized. GAZ-incorporated membranes had a thinner active layer and larger pore sizes as well as smoother surface morphology with increasing GAZ content. The presence of GAZ made the pure water permeance of the membranes 2.3-folds of the typical TFC membrane without GAZ, up to 30.5 LMH/bar with a comparable Na₂SO₄ rejection of 93.5%. The membranes fabricated with a higher GAZ fraction exhibited superior removal for the dyes of Rose bengal (>99.6%) and Congo red (>97.5%) with the dye permeance over 23.0 LMH/bar, and higher rejection rates for natural organic matters (>98.5%, >98.0% and >93.0% for sodium alginate, bovine serum albumin and humic acid, respectively). The membranes with stable operation implied their potential applications in water desalination and purification.

具有潜在高渗透性的超薄松散薄膜复合（TFC）纳滤膜是水净化领域的迫切需求。然而，其量身定制的结构和形态仍然是一个挑战。在此，首次提出了一种新型复合膜，将 3,5-二氨基-1,2,4 三唑 (GAZ) 和哌嗪与均苯三甲酰氯 (TMC) 引入聚酰胺层。表征了在水相中用不同 GAZ 浓度制备的膜的物理化学性质。随着 GAZ 含量的增加，掺入 GAZ 的膜具有更薄的活性层和更大的孔径以及更光滑的表面形态。GAZ 的存在使膜的纯水渗透率是不含 GAZ 的典型 TFC 膜的 2.3 倍，高达 30.5 LMH/bar，具有可比的 Na ₂SO ₄拒绝率为 93.5%。用较高 GAZ 分数制造的膜对玫瑰红 (> 99.6%) 和刚果红 (> 97.5%) 染料表现出优异的去除率，染料渗透率超过 23.0 LMH/bar，对天然有机物的去除率更高 (>海藻酸钠、牛血清白蛋白和腐植酸分别为 98.5%、>98.0% 和 >93.0%）。运行稳定的膜意味着其在海水淡化和净化方面的潜在应用。