Lamellar membranes show exceptional molecular permeation properties of key importance for many applications. However, their design and development need the construction of regular and straight interlayer channels and the establishment of corresponding transport rate equation. The fabrication of a uniformly lamellar membrane is reported using double‐layered Ti₃C₂T_x MXenes as rigid building blocks. This membrane possesses ordered and straight 2 nm channels formed via a direct self‐stacking, in contrast to the conventional irregular ones from flexible sheets. Such channels permit precise molecular rejection and unparalleled molecular permeation. The permeance of water and organics by this membrane reached 2300 and 5000 L m⁻² h⁻¹ bar⁻¹, respectively. The molecular transfer mechanism in confined nanochannels, and the corresponding model equation are established, paving a way to nanoscale design of highly efficient channeled membranes for transport and separation applications.

中文翻译：

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规则引导的层状膜，可实现无与伦比的水和有机物渗透

层状膜显示出优异的分子渗透性能，对于许多应用而言至关重要。然而，它们的设计和开发需要构造规则且笔直的夹层通道并建立相应的传输速率方程。据报道，使用双层Ti ₃ C ₂ T _x MXenes作为刚性构建基块，可以制造均匀的层状膜。该膜具有通过直接自堆叠形成的有序且笔直的2 nm通道，这与柔性片材的常规不规则通道形成对比。这样的通道允许精确的分子排斥和无与伦比的分子渗透。该膜对水和有机物的渗透率达到2300和5000 L m ^-2  h^-1  bar ^-1。建立了在受限的纳米通道中的分子转移机理，并建立了相应的模型方程式，从而为用于运输和分离应用的高效通道膜的纳米级设计铺平了道路。