渗透
膜
层状结构
分子
化学物理
石墨烯
材料科学
分子动力学
纳米技术
化学工程
化学
计算化学
复合材料
有机化学
渗透
生物化学
工程类
作者
Yongzheng Wang,Siyu Liu,Jingjing Chen,Chongchong Chen,Xiaoli Wu,Zhirong Yang,Jie Zhang,Jingtao Wang
摘要
Abstract Two‐dimensional (2D) nanochannels with confined spacing and tunable microenvironment exhibit broad application prospects in molecule‐scale processes. However, mass transport behaviors in nanochannels have yet been clearly elucidated, due to the complex physical and chemical structures of nanochannels. Herein, a series of vertically‐aligned nanochannels with tunable chemistry were fabricated by embedding graphene‐based lamellar membranes into epoxy matrix. In this way, 2 mm‐length robust nanochannels can maintain the molecular transport configuration throughout the membrane without the disturbance from entrance and cross‐layer domains. Based on these platforms, it is demonstrated that molecule–channel and molecule–molecule interactions codetermine molecular transport efficiency by controlling molecular configuration and transfer friction. Significantly, matched interaction energies permit fast transport with methanol permeance of over 26.1 L m −2 h −1 bar −1 , which outperforms most reported long‐range nanochannels, while mismatched interaction energies fail to do so. In addition, the vertically‐aligned nanochannels membranes hold exceptional stability because of the mechanical protection of epoxy.
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