液相剥离吡啶基共价有机框架纳米片组装成膜用于高效H<sub>2</sub>/CO<sub>2</sub>气体分离

左宏瑜; 张卫懿; 廖耀祖

doi:10.11777/j.issn1000-3304.2025.25003

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液相剥离吡啶基共价有机框架纳米片组装成膜用于高效H₂/CO₂气体分离

研究论文 | 更新时间：2025-06-18

- 液相剥离吡啶基共价有机框架纳米片组装成膜用于高效H₂/CO₂气体分离
- Liquid-phase Exfoliation of Pyridine-based Covalent Organic Framework Nanosheets for High-performance H₂/CO₂ Gas Separation Membrane Fabrication
- 高分子学报 2025年56卷第6期页码：981-991
- 作者机构：
  
  东华大学材料科学与工程学院纤维材料改性国家重点实验室上海 201620
- 作者简介：
  
  E-mail: wyzhang@dhu.edu.cn
  yzliao@dhu.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25003
  中图分类号：
- CSTR：32057.14.GFZXB.2025.7369
- 收稿日期：2025-01-02，
  
  录用日期：2025-02-24，
  
  网络出版日期：2025-05-06，
  
  纸质出版日期：2025-06-20
- 稿件说明：
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左宏瑜, 张卫懿, 廖耀祖. 液相剥离吡啶基共价有机框架纳米片组装成膜用于高效H₂/CO₂气体分离. 高分子学报, 2025, 56(6), 981-991

Zuo, H. Y.; Zhang, W. Y.; Liao, Y. Z. Liquid-phase exfoliation of pyridine-based covalent organic framework nanosheets for high-performance H₂/CO₂ gas separation membrane fabrication. Acta Polymerica Sinica, 2025, 56(6), 981-991
左宏瑜, 张卫懿, 廖耀祖. 液相剥离吡啶基共价有机框架纳米片组装成膜用于高效H₂/CO₂气体分离. 高分子学报, 2025, 56(6), 981-991 DOI： 10.11777/j.issn1000-3304.2025.25003. CSTR： 32057.14.GFZXB.2025.7369.

Zuo, H. Y.; Zhang, W. Y.; Liao, Y. Z. Liquid-phase exfoliation of pyridine-based covalent organic framework nanosheets for high-performance H₂/CO₂ gas separation membrane fabrication. Acta Polymerica Sinica, 2025, 56(6), 981-991 DOI： 10.11777/j.issn1000-3304.2025.25003. CSTR： 32057.14.GFZXB.2025.7369.

摘要

共价有机框架纳米片(CONs)是一种具有优异性质的二维片层材料，共价有机框架(COF)材料所具有的可预设计的周期性结构、原子级精度、定制功能性、良好的热稳定性、永久性孔隙以及极低的密度等特性更是赋予了CONs更大的开发潜力. 针对COF纳米片剥离效率低、尺寸可控性差导致膜制备工艺复杂的问题，采用液相剥离法制备吡啶基COF纳米片(TpBpy-CON)并组装成COF膜(TpBpy-COM). 在温和条件下对COF粉末进行剥离，获得均匀分散的TpBpy-CON. 由此方法制得的COF纳米片具有较高的纵横比、比表面积及孔隙率. 进而，通过真空辅助技术将纳米片组装成COF膜. 所制备的TpBpy-COM膜展现出致密的表面结构和优异的H

/CO

气体分离性能.

Abstract

Covalent organic framework nanosheets (CONs) are a class of two-dimensional layered materials with exceptional properties. The inherent features of COF materials

such as pre-designable periodic structures

atomic-level precision

tunable functionality

excellent thermal stability

permanent porosity

and ultralow density

endow CO

Ns with significant potential for further development. However

challenges such as low exfoliation efficiency of COF nanosheets and poor size controllability complicate membrane fabrication processes. In this study

a liquid-phase exfoliation method was employed to prepare pyridine-based COF nanosheets (TpBpy-CON) and assemble them into COF membranes (TpBpy-COM). COF powders were exfoliated under mild conditions to obtain size-controllable TpBpy-CON. The resulting COF nanosheets exhibited high aspect ratios

specific surface areas

and porosity. Subsequently

the nanosheets were assembled into COF membranes using vacuum-assisted techniques. The fabricated TpBpy-COM demonstrated a compact membrane surface structure and excellent H

/CO

gas separation performance.

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Keywords

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DOI：10.11777/j.issn1000-3304.2025.25003

摘要

Abstract

关键词

Keywords

references

液相剥离吡啶基共价有机框架纳米片组装成膜用于高效H₂/CO₂气体分离

Liquid-phase Exfoliation of Pyridine-based Covalent Organic Framework Nanosheets for High-performance H₂/CO₂ Gas Separation Membrane Fabrication