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<p>As industrialization has developed rapidly, the issue of organic pollutants in water and the atmosphere has become increasingly severe. In this study, a P(BAB-NIPAM)/CS@H-MWCNT adsorption material was synthesized by introducing MWCNT during free radical polymerization using BAB and NIPAM as monomers. Dual anchoring was achieved through π-π stacking and electrostatic attraction, which enhanced the stability between the polymer matrix and MWCNT and significantly improved the material’s broad-spectrum adsorption potential for pollutants with different charges. The structure of the material was analyzed and characterized using FTIR, XRD, and SEM. At a pH value of 4.0, with a reaction time of 200&#xa0;min and a temperature of 298&#xa0;K, the removal rate of CR reached as high as 92.2%, and the adsorption process conformed to the Langmuir model. P(BAB-NIPAM)/CS@H-MWCNT combines the strong hydrophilicity imparted by BAB monomers with the unique thermosensitivity of NIPAM monomers. The swelling and contraction behavior of hydrogels can be precisely controlled by regulating the environmental temperature to achieve pollutant desorption, thereby establishing a controllable cycle system of “adsorption-desorption” and effectively improving the reuse efficiency of materials. It provides new materials and technical ideas for the low-cost and sustainable treatment of organic pollutants.</p>

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Temperature-responsive hydrogel based on chitosan decorated with multiwalled carbon nanotubes for efficient adsorption and rapid desorption of dyes

  • 期刊论文

  • 发表日期：

    2026年4月10日

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  • Lei Lin,
  • Xiaofen Zhao,
  • Yuzhen Zhao,
  • Zemin He,
  • Lichun Niu,
  • Xiangbo Feng,
  • Zongcheng Miao,
  • Cai Hang

摘要

As industrialization has developed rapidly, the issue of organic pollutants in water and the atmosphere has become increasingly severe. In this study, a P(BAB-NIPAM)/CS@H-MWCNT adsorption material was synthesized by introducing MWCNT during free radical polymerization using BAB and NIPAM as monomers. Dual anchoring was achieved through π-π stacking and electrostatic attraction, which enhanced the stability between the polymer matrix and MWCNT and significantly improved the material’s broad-spectrum adsorption potential for pollutants with different charges. The structure of the material was analyzed and characterized using FTIR, XRD, and SEM. At a pH value of 4.0, with a reaction time of 200 min and a temperature of 298 K, the removal rate of CR reached as high as 92.2%, and the adsorption process conformed to the Langmuir model. P(BAB-NIPAM)/CS@H-MWCNT combines the strong hydrophilicity imparted by BAB monomers with the unique thermosensitivity of NIPAM monomers. The swelling and contraction behavior of hydrogels can be precisely controlled by regulating the environmental temperature to achieve pollutant desorption, thereby establishing a controllable cycle system of “adsorption-desorption” and effectively improving the reuse efficiency of materials. It provides new materials and technical ideas for the low-cost and sustainable treatment of organic pollutants.