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

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

作者机构：Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island ResourcesHainan UniversityHaikou 570228P.R.China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2022年第38卷第2期

页      面：472-477页

核心收录：

学科分类：07[理学] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：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) the Innovation Research Project for Postgraduates in Hainan Province,China(Nos.Hys2020-64,Hys2020-65). 

主　　题：Covalent organic framework Iodine capture Porous material Adsorbent Nuclear energy 

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.