聚乙烯亚胺修饰共轭微孔聚合物及其高效碘吸附研究

池程浩; 侯心如; 段举; 廖耀祖

doi:10.11777/j.issn1000-3304.2024.24278

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聚乙烯亚胺修饰共轭微孔聚合物及其高效碘吸附研究

研究论文 | 更新时间：2025-04-01

- 聚乙烯亚胺修饰共轭微孔聚合物及其高效碘吸附研究
- Polyethyleneimine-modified Conjugated Microporous Polymer for Efficient Iodine Adsorption
- 高分子学报 2025年56卷第4期页码：598-610
- 作者机构：
  
  东华大学材料科学与工程学院先进纤维材料全国重点实验室上海 201620
- 作者简介：
  
  E-mail: 17864388867@163.com;
  E-mail: yzliao@dhu.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 ┣52373172);52073046┫
- DOI：10.11777/j.issn1000-3304.2024.24278
  中图分类号：
- CSTR：32057.14.GFZXB.2025.7342
- 收稿日期：2024-11-13，
  
  录用日期：2025-01-10，
  
  网络出版日期：2025-03-10，
  
  纸质出版日期：2025-04-20
- 稿件说明：
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池程浩, 侯心如, 段举, 廖耀祖. 聚乙烯亚胺修饰共轭微孔聚合物及其高效碘吸附研究. 高分子学报, 2025, 56(4), 598-610

Chi, C. H.; Hou, X. R.; Duan, J.; Liao, Y. Z. Polyethyleneimine-modified conjugated microporous polymer for efficient iodine adsorption. Acta Polymerica Sinica, 2025, 56(4), 598-610
池程浩, 侯心如, 段举, 廖耀祖. 聚乙烯亚胺修饰共轭微孔聚合物及其高效碘吸附研究. 高分子学报, 2025, 56(4), 598-610 DOI： 10.11777/j.issn1000-3304.2024.24278. CSTR： 32057.14.GFZXB.2025.7342.

Chi, C. H.; Hou, X. R.; Duan, J.; Liao, Y. Z. Polyethyleneimine-modified conjugated microporous polymer for efficient iodine adsorption. Acta Polymerica Sinica, 2025, 56(4), 598-610 DOI： 10.11777/j.issn1000-3304.2024.24278. CSTR： 32057.14.GFZXB.2025.7342.

摘要

共轭微孔聚合物(CMPs)由于具有高度离域的

共轭体系、较大的比表面积和灵活的表面活性基团等特点，使其在碘吸附领域中展现出很高的应用潜力. 然而，吸附容量低、循环性能差等缺点阻碍了CMPs在碘吸附领域的发展. 基于此，我们开发了一种新型的聚乙烯亚胺(PEI)化学修饰CMPs用于碘吸附. 首先采用Sonogashira偶联法制备出具有高密度羧基的共轭微孔聚合物(CMP-COOH)，再进行PEI化学接枝修饰得到一种富氮共轭微孔聚合物(CMP-PEI). 借助PEI中丰富的氨基吸附位点进一步增强对碘分子的亲和力.结果表明，PEI分散体浓度为15%时，所制备CMP-PEI的碘吸附容量为3.26 g/g，且在398 K的温度下碘释放率高达95.6%，从而验证了所制备的CMP-PEI在碘吸附领域中具有较好的应用价值.

Abstract

Conjugated microporous polymers (CMPs) exhibit high potential in the field of iodine adsorption due to their highly delocalized

conjugated system

large specific surface area

and

flexible surface-active groups. However

the drawbacks of low adsorption capacity and poor cycling performance have hindered the development of CMPs in the field of iodine adsorption. Herein

we propose a novel polyethyleneimine (PEI) chemically modified CMPs for efficient iodine adsorption. Firstly

the Sonogashira coupling method was used to prepare a conjugated microporous polymer with high-density carboxyl groups (CMP-COOH)

followed by PEI chemical grafting modification to obtain a nitrogen rich conjugated microporous polymer (CMP-PEI). By utilizing the abundant amino adsorption sites in PEI

the affinity for iodine molecules is further enhanced. The results showed that when the PEI dispersion concentration was 15%

the iodine adsorption capacity of CMP-PEI prepared could reach up to 3.26 g/g

and the iodine release rate was as high as 95.6% at a temperature of 398 K

further indicating that the prepared CMP-PEI has good application value in the field of iodine adsorption.

关键词

Keywords

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