In this study, Zinc-Aluminium layered double hydroxide (LDH) was synthesized to fabricate membranes with superior hydrophilic and photocatalytic characteristics. The prepared LDH was extensively characterized and employed for the preparation of polyetherimide mixed matrix ultrafiltration (UF) membranes, which displayed > 96 % BSA rejection and a flux recovery ratio of 88 % even after 3-cycles. M-1 (UF, 1 wt. %) displayed a 94 % degradation of organic dye (methylene blue) in 120 min when irradiated with UV-light. Further, nanofiltration (NF) membranes were prepared by incorporating Zn/Al LDH into the polyamide (PA) layer during the in-situ interfacial polymerization to prepare thin-film nanocomposite membranes. MT-2 (NF, 0.4 wt.% LDH in PA layer) displayed improved hydrophilicity (lower water contact angle), > 94.5 % rejection of cationic dye (Methylene blue), > 91 % rejection of inorganic salt (CaSO₄) with an 80 % flux recovery after long-term filtration. The LDH holds an auspicious potential to tune the properties of UF and NF membranes to be used in the treatment of industrial effluents.

在这项研究中，锌铝层状双氢氧化物（LDH）被合成来制造具有优异的亲水性和光催化特性的膜。所制备的LDH具有广泛的特性，可用于制备聚醚酰亚胺混合基质超滤（UF）膜，即使经过3个循环，该膜仍显示出> 96％的BSA截留率和88％的通量回收率。当用紫外光照射时，M-1（UF，1 wt。％）在120分钟内显示94％的有机染料（亚甲基蓝）降解。此外，通过在原位界面聚合过程中将Zn / Al LDH掺入聚酰胺（PA）层中以制备薄膜纳米复合膜来制备纳米过滤（NF）膜。MT-2（NF，PA层中的LDH为0.4 wt。％）显示出改善的亲水性（较低的水接触角），> 94。₄）长期过滤后，焊剂回收率为80％。LDH具有调节用于工业废水处理的UF和NF膜性能的吉祥潜力。