Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (12): 2667.doi: 10.7503/cjcu20200624

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2D Mesoporous Covalent Organic Framework with High Iodine Capture Capability

XU Guojie, CHANG Jianhong, FANG Qianrong()   

  1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,Jilin University,Changchun 130012,China
  • Received:2020-08-31 Online:2020-12-10 Published:2020-12-09
  • Contact: FANG Qianrong E-mail:qrfang@jlu.edu.cn
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(21571079┫.)

Abstract:

As a typical contaminant of nuclear waste, the research and development of iodine-capture materials has been great concern and challenge. Here, a novel two-dimensional mesoporous covalent organic framework(JUC-573) was reported. Powder X-ray diffraction, nitrogen adsorption and desorption isotherm, TGA and other characterizations indicated that the synthesized covalent organic frameworks(COFs) has high crystallinity, high specific surface area and good thermal stability. Under 333 K and ambient pressure, JUC-573 exhibited a good adsorption capacity to iodine vapor, and high adsorption capacity was up to 4.15 g/g. The regular 1D mesoporous vertical channel in JUC-573 can effectively avoid the blockage after iodine adsorption, thus optimizing the adsorption capacity of material. In addition, JUC-573 can be reused at least 5 times and retains its crystallinity.

Key words: Covalent organic frameworks(COFs), Mesoporous structure, Iodine capture

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