Nitrogen-enriched Heterocyclic Poly(ionic liquid)s/MXene Composite Membranes for Efficient Dye Separation

Jiang Li; Jun-Tao Tang; Chun Tian; Shuai Gu; Peng-Peng Shao; Rui-Ren Tang; Chen-Xiang Ai; Gui-Peng Yu

doi:10.1007/s10118-026-3800-9

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Nitrogen-enriched Heterocyclic Poly(ionic liquid)s/MXene Composite Membranes for Efficient Dye Separation

RESEARCH ARTICLE | Updated：2026-09-10

- Nitrogen-enriched Heterocyclic Poly(ionic liquid)s/MXene Composite Membranes for Efficient Dye Separation
- Chinese Journal of Polymer Science Vol. 44, Pages: 1-10(2026)
- Affiliations：
  
  Hunan Key Laboratory of Micro & Nano Materials Interface Science, Hunan Provincial Education Department; College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
- Author bio：
  
  22043174@csu.edu.cn (C.X.A.)
  gilbertyu@csu.edu.cn (G.P.Y.)
- Funds：
- DOI：10.1007/s10118-026-3800-9
  CLC：
- Received：17 March 2026，
  
  Accepted：03 July 2026，
  
  Online First：10 September 2026，
  
  Published：2026-08
- Accepted：
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Li, J.; Tang, J. T.; Tian, C.; Gu, S.; Shao, P. P.; Tang, R. R.; Ai, C. X.; Yu, G. P. Nitrogen-enriched heterocyclic poly(ionic liquid)s/MXene composite membranes for efficient dye separation. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3800-9

Jiang Li, Jun-Tao Tang, Chun Tian, et al. Nitrogen-enriched Heterocyclic Poly(ionic liquid)s/MXene Composite Membranes for Efficient Dye Separation[J/OL]. Chinese Journal of Polymer Science, 2026, 441-10.
Li, J.; Tang, J. T.; Tian, C.; Gu, S.; Shao, P. P.; Tang, R. R.; Ai, C. X.; Yu, G. P. Nitrogen-enriched heterocyclic poly(ionic liquid)s/MXene composite membranes for efficient dye separation. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3800-9 DOI：

Jiang Li, Jun-Tao Tang, Chun Tian, et al. Nitrogen-enriched Heterocyclic Poly(ionic liquid)s/MXene Composite Membranes for Efficient Dye Separation[J/OL]. Chinese Journal of Polymer Science, 2026, 441-10. DOI： 10.1007/s10118-026-3800-9.

摘要

Abstract

Organic dyes

as a typical class of persistent pollutants in aquatic environments

pose potential threats to ecosystem safety and public heal

th. Poly(ionic liquid)s (PILs) can provide charge repulsion and MXene can offer interlayer nanochannels

making them ideal candidates for fabricating high-efficiency separation membranes. In this study

composite membrane materials with asymmetric and symmetric structures were facilely constructed by loading coatings of PILs-modified two-dimensional transition metal carbides (MXene

C) at various loadings onto polypropylene microfiltration membranes

overcoming the drawbacks of poor stability of pure PIL membranes and severe interlayer stacking of neat MXene membranes

with the aim of achieving efficient separation of dye molecules. Methyl orange

methyl red

methylene blue

and rhodamine B were selected as model dyes to systematically evaluate the separation performance of the as-prepared composite membranes. The results showed that the PILs/MXene composite membranes exhibited excellent rejection performance for the four model dyes

with rejection rates exceeding 99% at higher loading levels (

e.g.

AM-3/SM-3) while maintaining a high water flux (up to 58.36 L·m

–2

·h

–1

·MPa

–1

). The charge interaction between dyes and the membrane surface

as well as the size effect of dye molecules

were key factors that significantly affected the rejection efficiency of the membranes. In addition

the composite membrane displayed favorable operational stability in aqueous environments

demonstrating its application potential in the purification of industrial dye wastewater. This work provides new insights for the development of PILs/MXene composite membranes for dye wastewater purification

meanwhile

the simple membrane fabrication method also endows it with considerable potential for industrial scale-up.

关键词

Keywords

references

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