Construction of Tetrathiafulvalene-based Covalent Organic Frameworks for Superior Iodine Capture  

作　　者：WANG Guangbo XIE Kehui ZHU Fucheng KAN Jinglan LI Sha GENG Yan DONG Yubin 

机构地区：[1]College of Chemistry,Chemical Engineering and Materials Science,Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong,Key Laboratory of Molecular and Nano Probes,Ministry of Education,Shandong Normal University,Jinan 250014,P.R.China

出　　处：《Chemical Research in Chinese Universities》2022年第2期409-414,共6页高等学校化学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22171169,22001153,21971153,21772116);the China Postdoctoral Science Foundation(No.2020M672118);the Shandong Natural Science Foundation of Major Basic Research Projects,China(No.ZR2020ZD32);the Natural Science Foundation of Shandong Province,China(No.ZR2020QB036);the Taishan Scholars Climbing Program and Taishan Scholar Construction Project of Shandong Province,China。

摘　　要：The effective capture of radioiodine species during nuclear fuel reprocessing and nuclear accidents is of primary importance but remains challenging for the sustainable development of nuclear energy.Herein,we report two newly designed two-dimensional(2D)and three-dimensional(3D)covalent organic frameworks by introducing tetrathiafulvalene functional groups into the building units for the simultaneous physisorption and chemisorption capture of iodine molecules.Remarkably,the obtained 3D TTF-TAPT-COF material exhibited a superior iodine vapor adsorption capacity of up to 5.02 g/g at 348 K and under ambient pressure and an adsorption kinetics of 0.515 g/(g∙h),surpassing most of other materials reported so far.The strong physiochemical interactions between iodine molecules and the frameworks of the obtained COFs were revealed by a set of experimental techniques.This study provides a feasible approach for the rational design and the construction of novel and effective COF-based adsorbents for iodine enrichment and related environmental remediation.

关 键 词：Covalent organic framework(COF) TETRATHIAFULVALENE Iodine capture Physiochemical adsorption 

分 类 号：O57[理学—粒子物理与原子核物理]