Research on construction of MOF composite membrane via PSM and its performance in oxygen separation from water

CHENG Zhenqian; WANG Xuanhe; WANG Bo; LIU Jijiang; HE Weidong

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Research on construction of MOF composite membrane via PSM and its performance in oxygen separation from water

Research & Approach | 更新时间：2026-03-01

- Research on construction of MOF composite membrane via PSM and its performance in oxygen separation from water
- Vol. 45, Issue 2, Pages: 28-31(2026)
- 作者机构：
  
  中国电子科技集团公司第四十九研究所,黑龙江,哈尔滨,150028
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP212
- Published：2026
- 稿件说明：
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CHENG Zhenqian, WANG Xuanhe, WANG Bo, et al. Research on construction of MOF composite membrane via PSM and its performance in oxygen separation from water[J]. 2026, 45(2): 28-31.
DOI：

CHENG Zhenqian, WANG Xuanhe, WANG Bo, et al. Research on construction of MOF composite membrane via PSM and its performance in oxygen separation from water[J]. 2026, 45(2): 28-31. DOI：

摘要

二维金属有机框架（2D MOF）纳米片因其独特的结构与性能，在分离科学领域展现出巨大潜力。合成后修饰（PSM）技术可在保持MOF晶体结构不变的前提下，有效调控其功能。本文旨在基于PSM策略开发一种高效分离水中氧气的新型2D MOF纳米复合膜。通过将氨基化的二铜-2-氨基-1

4-苯二甲酸酯（CuBDC-NH

）纳米片与异氰酸酯封端的聚氨酯（PU）低聚物进行复合，成功构建了CuBDC-NH

/PU纳米复合膜。研究结果表明，当CuBDC-NH

负载量为质量分数4%时，复合膜的氧气/水蒸气分离选择性显著提升：其氧气透过量由纯PU膜的1.872×10

/(m

·24h·0.1MPa)提升至2.275×10

/(m

·24h·0.1MPa)，而水蒸气透过量仅从763.57cm

/(m

·24h·0.1MPa)小幅增至930.87cm

/(m

·24h·0.1MPa)，氧气与水蒸气的分离选择性提升近10倍，展现出高效分离水中氧气的性能。

Abstract

Two-dimensional metal-organic framework(2D MOF)nanosheets show great potential in the field of separation science due to their unique structure and properties.Post-synthetic modification(PSM)can effectively regulate the functions of MOFs on the premise of keeping their crystal structures unchanged.This paper aims to develop a novel 2D MOF nanocomposite membra

ne for efficient oxygen separation from water based on the PSM strategy.A copper(Ⅱ)-2-amino-1

4-benzenedicar-boxylate/polyurethane(CuBDC-NH

/PU)nanocomposite membrane is successfully constructed by compouding aminated CuBDC-NH

nanosheets with isocyanate-terminated PU oligomers.The research results demonstrate that when the mass fraction of CuBDC-NH

loading is 4%

the oxygen/water vapor separation selectivity of the composite membrane is significantly enhanced.The oxygen permeability rate increases from 1.872×10

/(m

·24h·0.1MPa) for the pure PU membrane to 2.275×10

/(m

·24h·0.1MPa)

while the water vapor transmission rate only increases slightly from 763.57cm

/(m

·24h·0.1MPa)to 930.87cm

/(m

·24h·0.1MPa).The separation selectivity of oxygen to water vapor is improved by nearly 10 times

indicating its efficient performance for oxygen separation from water.

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