Two-dimensional (2D) zeolites provide inspiring opportunities for the exploitation of ultra-thin molecular sieve membranes, but it is rarely applied in water treatment membranes. Exfoliated 2D MWW-type nanosheets in liquid hydroxyl-terminated polybutadiene (HTPB) were assembled into the lamellar MH membranes by vacuum filtration. Various techniques were employed to characterize the surface chemical composition and morphology of the MH membranes. The typical ordered layer-like structure built by the stack of MWW nanosheets mainly contributed to the performance of the MH membrane, and the guest role of a small amount of residual HTPB has also been confirmed. The obtained MH membrane exhibited a water permeance of 11.3 L·m⁻²·h⁻¹·bar⁻¹ with above 99.5 % rejection for Evans Blue (EB). In particular, the rejection of negatively charged dyes with a molecular size greater than 1.5 nm essentially remained above 90.0 %. Moreover, the lamellar MH membrane possessed excellent physicochemical stability. Excellent rejection was guaranteed at different pressures, pH, and successive cross-flow operations. Although there is still a demand for improvement in terms of permeance, the successful preparation of 2D zeolite lamellar membranes fully demonstrates the promising potential of 2D zeolite nanosheets in water purification.

二维 (2D) 沸石为开发超薄分子筛膜提供了鼓舞人心的机会，但很少应用于水处理膜。通过真空过滤将液态羟基封端的聚丁二烯 (HTPB) 中的剥离 2D MWW 型纳米片组装到层状 MH 膜中。采用各种技术来表征 MH 膜的表面化学成分和形态。由MWW纳米片堆叠构建的典型有序层状结构主要贡献了MH膜的性能，少量残留HTPB的客体作用也得到了证实。得到的MH膜的透水率为11.3 L·m ^-2 ·h ^-1 ·bar ^-1Evans Blue (EB) 的拒绝率超过 99.5%。特别是，对分子大小大于 1.5 nm 的带负电荷染料的排斥率基本上保持在 90.0% 以上。此外，层状MH膜具有优异的物理化学稳定性。在不同的压力、pH 值和连续的错流操作下，保证了出色的剔除率。尽管在渗透性方面仍有改进的需求，但二维沸石层状膜的成功制备充分证明了二维沸石纳米片在水净化方面的巨大潜力。