Issue 12, 2021

Porous hydrogen-bonded organic framework membranes for high-performance molecular separation

Abstract

Hydrogen-bonded organic frameworks (HOFs) with intrinsic, tunable, and uniform pores are promising candidates to act as membranes for molecular separation, but they are yet to be explored in this field. Herein, a type of HOF membrane based on a thin-film nanocomposite (TFN) membrane containing porous HOF (PFC-1) nanoparticles was successfully fabricated via a facile interfacial polymerization method. The homogeneously distributed HOF nanoparticles can provide direct channels in the polyamide (PA) active layer for molecule separation. Due to the ultrathin nature of the TFN membrane and the highly ordered porous structure of the PFC-1 nanoparticles, these flexible HOF membranes exhibit both ultrahigh water permeability (∼546.09 L m−2 h−1 bar−1) and the excellent rejection of dye molecules (e.g., rhodamine B rejection of >97.0%). Furthermore, long-term operational stability (>50 min) and satisfactory cycling performance (>5 cycles) have also been achieved. This study may shed light on the fabrication of HOF membranes for liquid-phase molecular separation.

Graphical abstract: Porous hydrogen-bonded organic framework membranes for high-performance molecular separation

Supplementary files

Article information

Article type
Communication
Submitted
16 Mär 2021
Accepted
29 Apr 2021
First published
10 Mai 2021
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2021,3, 3441-3446

Porous hydrogen-bonded organic framework membranes for high-performance molecular separation

X. Jiang, Q. Yin, B. Liu, J. Chen, R. Wang and T. Liu, Nanoscale Adv., 2021, 3, 3441 DOI: 10.1039/D1NA00199J

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