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Construction of Three-dimensional Porous Chitosan-based Composite Aerogels and Their Adsorption of Food Dyes
- Polymer Bulletin Vol. 39, Issue 3, Pages: 457-469(2026)
- 作者机构：
南宁学院食品与质量工程学院 南宁 530200
南宁学院热带亚热带特色水果高值化利用广西高校工程研究中心 南宁 530200
广西科技大学生物与化学工程学院 柳州 545000
- 作者简介：
- 基金信息：
DOI：10.14028/j.cnki.1003-3726.2025.25.300
CLC：Received：02 December 2025，
Accepted：29 December 2025，
Online First：05 February 2026，
Published：20 March 2026
- 稿件说明：
移动端阅览
许文婷, 叶璐彤, 周丽娜, 罗星星, 杨康, 曾静雯, 范松林. 三维多孔壳聚糖基复合气凝胶的构筑及其对食品色素的吸附. 高分子通报, 2026, 39(3), 457-469.
Xu, W. T.; Ye, L. T.; Zhou, L. N.; Luo, X. X.; Yang, K.; Zeng, J. W.; Fan, S. L. Construction of three-dimensional porous chitosan-based composite aerogels and their adsorption of dood dyes. Polym. Bull. (in Chinese), 2026, 39(3), 457-469.
许文婷, 叶璐彤, 周丽娜, 罗星星, 杨康, 曾静雯, 范松林. 三维多孔壳聚糖基复合气凝胶的构筑及其对食品色素的吸附. 高分子通报, 2026, 39(3), 457-469. DOI： 10.14028/j.cnki.1003-3726.2025.25.300.
Xu, W. T.; Ye, L. T.; Zhou, L. N.; Luo, X. X.; Yang, K.; Zeng, J. W.; Fan, S. L. Construction of three-dimensional porous chitosan-based composite aerogels and their adsorption of dood dyes. Polym. Bull. (in Chinese), 2026, 39(3), 457-469. DOI： 10.14028/j.cnki.1003-3726.2025.25.300.
摘要
针对壳聚糖基吸附剂结构稳定性差与吸附容量低的问题，提出一种物理−化学双交联策略，以壳聚糖(CS)为基体、聚乙烯亚胺(PEI)为改性剂，并引入羧基化碳纳米管(CCNT)作为纳米交联剂，构建了具有三维多孔结构的PEI/CCNT/CS气凝胶(aerogel)吸附剂(PEI/CCNT/CA)。结构表征表明，该气凝胶具备发达的大孔通道及丰富的活性官能团(―NH
2
、―COOH、―OH)，有利于污染物分子的扩散与吸附。在吸附性能测试中，PEI/CCNT/CA对柠檬黄(TZ)表现出优异吸附能力，最大吸附容量为130.5 mg·g
−1
，吸附行为符合准二级动力学和Langmuir等温模型，表明其吸附过程主要为单层化学吸附。该材料在pH为2~9范围内均保持良好吸附性能，并具备优异的循环稳定性。通过构建稳定的三维多孔结构和多重官能团协同作用，显著提升了壳聚糖基气凝胶的吸附性能，为食品废水处理提供了具有潜力的新型吸附材料。
Abstract
To address the issues of poor structural stability and low adsorption capacity in chitosan-based adsorbents
this study proposes a physicochemical dual-crosslinking strategy. Utilising chitosan (CS) as the matrix and polyethyleneimine (PEI) as the modifier
while incorporating carboxylated carbon nanotubes (CCNT) as
the nanoscale crosslinking agent
a three-dimensional porous CS aerogel adsorbent (PEI/CCNT/CA) was constructed. Structural characterisation revealed that this aerogel possesses well-developed macropore channels and abundant active functional groups (―NH
2
―COOH
―OH)
which are conducive to the diffusion and adsorption of pollutant molecules. In adsorption performance testing
PEI/CCNT/CA demonstrated outstanding adsorption capacity for tartrazine (TZ)
achieving a maximum adsorption capacity of 130.5 mg·g
−1
. The adsorption behaviour conformed to pseudo-second-order kinetics and the Langmuir isotherm model
indicating that the adsorption process primarily involved monolayer chemisorption. The material maintained good adsorption performance across a pH range of 2~9 and demonstrated excellent cycling stability. This study significantly enhanced the adsorption performance of chitosan-based aerogels by constructing a stable three-dimensional porous structure and leveraging synergistic effects of multiple functional groups
providing a promising novel adsorbent material for food wastewater treatment.
关键词
Keywords
references
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