Organic solvent separation using carbon nanotube-interlayered thin film composite membrane

Deng, Luyao; Gonzales, Ralph Rolly; Fu, Wenming; Xu, Guorong; Takagi, Ryosuke; Song, Qiangqiang; Zhou, Siyu; Matsuyama, Hideto

doi:10.1016/j.cej.2023.145197

Cited by 7 publications

(2 citation statements)

References 88 publications

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“…17 However, the interaction between nanochannel and molecule might be a double-edged sword: strong interaction induces molecular configuration and enhances its dissolution, while it causes high friction and slow diffusion, and vice versa. [18][19][20] Therefore, optimizing molecule-channel interaction might realize ordered molecular configuration and low frictional resistance simultaneously for fast confined mass transport. However, the typical lamellar membranes are prepared by horizontally stacking nanosheets, featuring tortuous transport paths.…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, researchers constructed hydrophilic 2D nanochannels to induce polar solvents to form orderly aligned configuration along nanochannel walls, acquiring over 3000 L m −2 h −1 bar −1 permeance for acetonitrile and methanol 17 . However, the interaction between nanochannel and molecule might be a double‐edged sword: strong interaction induces molecular configuration and enhances its dissolution, while it causes high friction and slow diffusion, and vice versa 18–20 . Therefore, optimizing molecule–channel interaction might realize ordered molecular configuration and low frictional resistance simultaneously for fast confined mass transport.…”

Section: Introductionmentioning

confidence: 99%

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Elucidating molecular transport behavior in vertically‐aligned 2D nanochannels of graphene‐based lamellar membranes

Wang,

Liu,

Chen

et al. 2023

AIChE Journal

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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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