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高等学校化学研究 ›› 2022, Vol. 38 ›› Issue (2): 472-477.doi: 10.1007/s40242-022-2057-2

• Articles • 上一篇    下一篇

A Two-dimensional Dual-pore Covalent Organic Framework for Efficient Iodine Capture

WEN Zhongliang, WANG Shenglin, FU Siyao, QIAN Jiaying, YAN Qianqian, XU Huanjun, ZUO Kaiming, SU Xiaofang, ZENG Chaoyuan, GAO Yanan   

  1. Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, Haikou 570228, P. R. China
  • 收稿日期:2022-02-18 修回日期:2022-03-09 出版日期:2022-04-01 发布日期:2022-05-18
  • 通讯作者: SU Xiaofang, ZENG Chaoyuan, GAO Yanan E-mail:994405@hainanu.edu.cn;zengchaoyuan@hainanu.edu.cn;ygao@hainanu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Nos.21965011, 22165009, 22105053), the Major Science and Technology Plan of Hainan Province, China(No.ZDKJ202016), the Natural Science Foundation of Hainan Province, China(Nos.220QN281, 521QN209), and the Innovation Research Project for Postgraduates in Hainan Province, China(Nos.Hys2020-64, Hys2020-65).

A Two-dimensional Dual-pore Covalent Organic Framework for Efficient Iodine Capture

WEN Zhongliang, WANG Shenglin, FU Siyao, QIAN Jiaying, YAN Qianqian, XU Huanjun, ZUO Kaiming, SU Xiaofang, ZENG Chaoyuan, GAO Yanan   

  1. Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan University, Haikou 570228, P. R. China
  • Received:2022-02-18 Revised:2022-03-09 Online:2022-04-01 Published:2022-05-18
  • Contact: SU Xiaofang, ZENG Chaoyuan, GAO Yanan E-mail:994405@hainanu.edu.cn;zengchaoyuan@hainanu.edu.cn;ygao@hainanu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Nos.21965011, 22165009, 22105053), the Major Science and Technology Plan of Hainan Province, China(No.ZDKJ202016), the Natural Science Foundation of Hainan Province, China(Nos.220QN281, 521QN209), and the Innovation Research Project for Postgraduates in Hainan Province, China(Nos.Hys2020-64, Hys2020-65).

摘要: Effectively capturing volatile radioiodine generated during the nuclear fission process is considered to be a safe way to the utilization of nuclear power. Here we report a new two-dimensional covalent organic framework(2D COF), ETTA-PyTTA-COF, as a highly efficient iodine adsorbent, which is constructed through the condensation reaction between 4,4’,4’’,4’’’-(ethene-1,1,2,2-tetrayl)-tetrabenzaldehyde(ETTA) and 1,3,6,8-tetrakis(4-aminophenyl)pyrene(PyTTA). The ETTA-PyTTA-COF possesses a permanent 1D channel porous structure with a high Brunauer-Emmet-Teller(BET) surface area of 1519 m2/g and excellent chemical and thermal stability. It shows ultrahigh iodine adsorption capability, which can reach up to 4.6 g/g in vapor owing to its high BET surface area, large π-conjugated structure and plenty of imine groups in the skeleton of the COF as effective iodine sorption sites.

关键词: Covalent organic framework, Iodine capture, Porous material, Adsorbent, Nuclear energy

Abstract: Effectively capturing volatile radioiodine generated during the nuclear fission process is considered to be a safe way to the utilization of nuclear power. Here we report a new two-dimensional covalent organic framework(2D COF), ETTA-PyTTA-COF, as a highly efficient iodine adsorbent, which is constructed through the condensation reaction between 4,4’,4’’,4’’’-(ethene-1,1,2,2-tetrayl)-tetrabenzaldehyde(ETTA) and 1,3,6,8-tetrakis(4-aminophenyl)pyrene(PyTTA). The ETTA-PyTTA-COF possesses a permanent 1D channel porous structure with a high Brunauer-Emmet-Teller(BET) surface area of 1519 m2/g and excellent chemical and thermal stability. It shows ultrahigh iodine adsorption capability, which can reach up to 4.6 g/g in vapor owing to its high BET surface area, large π-conjugated structure and plenty of imine groups in the skeleton of the COF as effective iodine sorption sites.

Key words: Covalent organic framework, Iodine capture, Porous material, Adsorbent, Nuclear energy