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<p>Effective and reversible adsorbents are one of the effective means of dealing with nuclear pollution. Herein, three diphenyl phosphates-containing hyper-cross-linked polymers (TP-HCPs) have been synthesized through Friedel-Crafts alkylation reactions. These polymers exhibited remarkable characteristics, including high specific surface areas, microporous and mesoporous morphologies, as well as exceptional thermal and chemical stability. Notably, the TP-HCP-3 possesses a specific surface area of 702.33 m<sup>2</sup> g<sup>− 1</sup> and exhibits a maximum iodine vapor capture capacity of 519 wt%, outperforming most other porous adsorbents. Furthermore, the removal efficiency of TP-HCP-3 for iodine from aqueous solutions reached 96.8%. The adsorption of iodine processes by TP-HCPs were predominantly chemical processes and exhibited characteristics of multilayer adsorption on heterogeneous surfaces. Additionally, the polymers exhibited remarkable recyclability, maintaining an adsorption capacity above 84% even after 5 cycles. These findings highlight the potential of TP-HCPs as efficient adsorbents for radioactive iodine waste.</p> Graphic abstract <p></p>

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Diphenyl phosphate hyper-cross-linked porous polymers for effective iodine capture

  • 期刊论文

  • 发表日期：

    2025年2月28日

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  • Zhichun Shi,
  • Xu Jia,
  • Liqiu Sun,
  • Jianjun Wang,
  • Jun Li,
  • Dan Wang,
  • Guohua Dong,
  • Liying Qi,
  • Liyan Wang,
  • Ming Zhao

摘要

Effective and reversible adsorbents are one of the effective means of dealing with nuclear pollution. Herein, three diphenyl phosphates-containing hyper-cross-linked polymers (TP-HCPs) have been synthesized through Friedel-Crafts alkylation reactions. These polymers exhibited remarkable characteristics, including high specific surface areas, microporous and mesoporous morphologies, as well as exceptional thermal and chemical stability. Notably, the TP-HCP-3 possesses a specific surface area of 702.33 m2 g− 1 and exhibits a maximum iodine vapor capture capacity of 519 wt%, outperforming most other porous adsorbents. Furthermore, the removal efficiency of TP-HCP-3 for iodine from aqueous solutions reached 96.8%. The adsorption of iodine processes by TP-HCPs were predominantly chemical processes and exhibited characteristics of multilayer adsorption on heterogeneous surfaces. Additionally, the polymers exhibited remarkable recyclability, maintaining an adsorption capacity above 84% even after 5 cycles. These findings highlight the potential of TP-HCPs as efficient adsorbents for radioactive iodine waste.

Graphic abstract