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<p>Developing high-performance adsorbents for radioactive iodine capture is urgent for nuclear wastewater disposal. Metal–organic frameworks (MOFs) have shown great potential for iodine capture owing to their fascinating physical and chemical properties. Herein, Zn-MOFs (ZIF-96_L<i>X</i>) with different porosities and excellent thermal stability were synthesized using a solvothermal method. The porosity and morphology of ZIF-96_L<i>X</i> could be easily tuned by controlling the molar ratio of metal ions to ligands. The as-synthesized ZIF-96_L5 exhibited a maximal iodine uptake of 4.23&#xa0;g/g, higher than that of other Zn-MOFs. Furthermore, a plausible mechanism of the improved iodine adsorption capability of the ZIF-96_L<i>X</i> adsorbents is proposed based on experimental characterizations and theoretical calculations.</p>

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Construction of metal–organic frameworks with tunable porosity and electron-rich groups for enhanced iodine capture

  • 期刊论文

  • 发表日期：

    2026年6月16日

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  • Li Peng,
  • Jinghan Gao,
  • Diesi Zhu,
  • Mingze Ni,
  • Fangjian Lv,
  • Xuquan Liu,
  • Ting Chen,
  • Chongxiong Duan,
  • Sibin Liu,
  • Kezhen Qi,
  • Xuejiao Sun

摘要

Developing high-performance adsorbents for radioactive iodine capture is urgent for nuclear wastewater disposal. Metal–organic frameworks (MOFs) have shown great potential for iodine capture owing to their fascinating physical and chemical properties. Herein, Zn-MOFs (ZIF-96_LX) with different porosities and excellent thermal stability were synthesized using a solvothermal method. The porosity and morphology of ZIF-96_LX could be easily tuned by controlling the molar ratio of metal ions to ligands. The as-synthesized ZIF-96_L5 exhibited a maximal iodine uptake of 4.23 g/g, higher than that of other Zn-MOFs. Furthermore, a plausible mechanism of the improved iodine adsorption capability of the ZIF-96_LX adsorbents is proposed based on experimental characterizations and theoretical calculations.