Abstract Two-dimensional (2D) lamellar membranes hold a broad prospect for separation applications. However, their design and development need controllable fabrication of ultrathin and stable lamellar membranes. Here, an organic-inorganic lamellar composite membrane with layer-by-layer graphene oxide (GO) and polyethyleneimine (PEI) structure was fabricated through a dual-needle electrostatic atomization strategy. The GO nanosheets work as skeleton to ensure ultrathin and defect-free membrane structure, while PEI cross-links adjacent GO nanosheets for structure stability. Importantly, this membrane achieves fast polar solvent permeance: 46.2 and 146.8 L m-2 h-1 bar-1 for water and acetone, outperforming most reported GO-based membranes. Meanwhile, the ordered and cross-linked interlayer channels provide accurate size sieving for industrial dyes (larger than 1.6 nm) with the rejection of above 96%. Significantly, this lamellar composite membrane displays excellent structure, operation, pressure, and cycling stabilities, which are difficult for traditional lamellar membranes.

中文翻译：

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用于高性能有机溶剂纳滤的超薄且稳定的有机-无机层状复合膜

摘要 二维 (2D) 层状膜具有广阔的分离应用前景。然而，他们的设计和开发需要可控地制造超薄且稳定的层状膜。在这里，通过双针静电雾化策略制造了具有逐层氧化石墨烯（GO）和聚乙烯亚胺（PEI）结构的有机-无机层状复合膜。GO 纳米片作为骨架以确保超薄和无缺陷的膜结构，而 PEI 交联相邻的 GO 纳米片以确保结构稳定性。重要的是，该膜实现了快速的极性溶剂渗透：水和丙酮分别为 46.2 和 146.8 L m-2 h-1 bar-1，优于大多数报道的基于 GO 的膜。同时，有序和交联的夹层通道为工业染料（大于 1.6 nm）提供精确的尺寸筛分，剔除率超过 96%。值得注意的是，这种层状复合膜表现出优异的结构、操作、压力和循环稳定性，这是传统层状膜难以企及的。