A mxene-based polymer brush adsorbent, and a preparation method and application thereof

By grafting poly(2,2,2-triphenylethylstyrene) and imidazole-based polyionic liquid onto MXene nanosheets, an MXene-based polymer brush adsorbent is formed, which solves the problems of easy oxidation, easy stacking, and difficult separation and recovery of MXene materials in water, and significantly improves the adsorption and removal rate of ibuprofen.

CN122399767APending Publication Date: 2026-07-17DONGGUAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DONGGUAN UNIV OF TECH
Filing Date
2026-06-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing MXene materials are easily oxidized in water, tend to aggregate, and have a negatively charged surface, which limits their adsorption and removal efficiency for organic pollutants in water such as ibuprofen. Furthermore, separation and recovery are difficult, and the limited grafting sites on the surface of MXene nanosheets restrict the introduction of polyionic liquid functional components, thus limiting the improvement of adsorption performance.

Method used

Poly(2,2,2-triphenylethylstyrene) was grafted onto MXene nanosheets and free radical active sites were generated through carbon-carbon weak bonds. Imidazole-based polyionic liquids were further grafted onto these sites to form MXene-based polymer brush adsorbents. The adsorption performance was improved by utilizing the abundant free radical active sites and the imidazole-based polyionic liquid components, while inhibiting the stacking and oxidation of nanosheets.

Benefits of technology

The adsorption and removal rate of ibuprofen pollutants was increased to 94.9%, and the stability and separation and recovery issues of MXene materials were resolved, achieving a highly efficient and easily separable adsorption effect.

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Abstract

本发明涉及一种MXene基聚合物刷吸附剂及其制备方法和应用，属于纳米功能材料制备领域。一种MXene基聚合物刷吸附剂，所述聚合物刷吸附剂以MXene纳米片为骨架，MXene纳米片表面接枝聚(2,2,2‑三苯基乙基苯乙烯)，聚(2,2,2‑三苯基乙基苯乙烯)上接枝聚(1‑乙烯基‑3‑丁基咪唑溴盐)。本发明使乙烯基化MXene纳米片、2,2,2‑三苯基乙基苯乙烯于甲苯中反应，获得MXene‑PTPES；将MXene‑PTPES与1‑乙烯基‑3‑丁基咪唑溴盐于甲苯中反应，得到MXene‑PTPES‑PILs。利用本发明提供的复合吸附剂MXene‑PTPES‑PILs进行对布洛芬的吸附，其去除率最高可达94.9%，且操作简单、易分离回收及环境友好。
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Citation Information

Patent Citations

  • Preparation method and application of polyion liquid modified MXene adsorbent

    CN115055172A