Facile Microwave-Assisted Synthesis of 2D Imine-Linked Covalent Organic Frameworks for Exceptional Iodine Capture

作     者：Ziad Alsudairy Normanda Brown Chongqing Yang Songliang Cai Fazli Akram Abrianna Ambus Conrad Ingram Xinle Li 

作者机构：Department of ChemistryClark Atlanta UniversityAtlantaGeorgia 30314United States The Molecular FoundryLawrence Berkeley National LaboratoryBerkeleyCalifornia 94720United States School of ChemistryGuangzhou Key Laboratory of Analytical Chemistry for BiomedicineSouth China Normal UniversityGuangzhou 510006P.R.China 

出 版 物：《Precision Chemistry》 (精准化学（英文）)

年 卷 期：2023年第1卷第4期

页      面：233-240页

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the U.S.Department of Energy Office of Science Early Career Research Program(DESC0022000) the National Science Foundation HBCU-UPRIA program(no.2100360) the U.S.Department of Defense,the Office of Naval Research(no:N00014-20-1-2523) supported by the Office of Science,Office of Basic Energy Sciences,of the U.S.Department of Energy under Contract No.DE-AC02-05CH11231 the support from Qassim University.S.C.is grateful for the support from the National Natural Science Foundation of China(no.22171092) 

主　　题：covalent organic frameworks microwave-assisted synthesis isoreticular materials radioactive iodine sequestration charge transfer 

摘      要：Covalent organic frameworks(COFs)have emerged as auspicious porous adsorbents for radioiodine ***,their conventional solvothermal synthesis demands multiday synthetic times and anaerobic conditions,largely hampering their practical *** tackle these challenges,we present a facile microwave-assisted synthesis of 2D imine-linked COFs,Mw-TFB-BD-X,(X=−CH_(3) and−OCH_(3))under air within just 1 *** resultant COFs possessed higher crystallinity,better yields,and more uniform morphology than their solvothermal ***,Mw-TFB-BD-CH_(3) and Mw-TFB-BDOCH_(3) exhibited exceptional iodine adsorption capacities of 7.83 g g^(−1) and 7.05 g g^(−1),respectively,placing them among the bestperforming COF adsorbents for static iodine vapor ***,Mw-TFB-BD-CH_(3) and Mw-TFB-BD-OCH_(3) can be reused 5 times with no apparent loss in the adsorption *** exceptionally high iodine adsorption capacities and excellent reusability of COFs were mainly attributed to their uniform spherical morphology and enhanced chemical stability due to the in-built electron-donating groups,despite their low surface *** work establishes a benchmark for developing advanced iodine adsorbents that combine fast kinetics,high capacity,excellent reusability,and facile rapid synthesis,a set of appealing features that remain challenging to merge in COF adsorbents so far.