Chemical Research in Chinese Universities ›› 2022, Vol. 38 ›› Issue (2): 456-460.doi: 10.1007/s40242-022-1513-3

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A Two-dimensional Covalent Organic Framework for Iodine Adsorption

ZHANG Jianhui1, LIU Jianchuan2, LIU Yaozu2, WANG Yujie2, FANG Qianrong2 and QIU Shilun2   

  1. 1. School of Information Engineering, Zhongshan Polytechnic, Zhongshan 528404, P. R. China;
    2. State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2021-12-31 Revised:2022-02-08 Online:2022-04-01 Published:2022-05-18
  • Contact: ZHANG Jianhui, WANG yujie E-mail:zjh@zcst.edu.cn;wyujie@jlu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos.22025504, 21621001, 21390394), the ″111″ Project of China(Nos. BP0719036, B17020), the China Postdoctoral Science Foundation(Nos. 2020TQ0118, 2020M681034), and the Program for JLU Science and Technology Innovative Research Team, China.

Abstract: Radioactive iodine is a notorious pollutant in gas radioactive nuclear waste due to its radiation hazard, volatility, chemical toxicity, and high mobility. Therefore, developing a material with high efficiency-specific iodine capture is significant. Covalent organic framework(COF) has attracted significant attention as a new crystalline porous organic material. Due to its large specific surface and high chemical stability, it is an excellent alternative to adsorbents. Herein, we report a chemically stable two-dimensional COF(termed JUC-609) with specific adsorption of iodine. Adsorption experiments show that JUC-609 has an excellent iodine adsorption capacity as high as 5.9 g/g under 353 K and normal pressure condition, and iodine adsorption after multiple cycles is still maintained. Our study thus promotes the potential application of COFs in the field of environment-related applications.

Key words: Porous material, Covalent organic framework, Iodine adsorption, Mesoporous structure