文献类型：期刊文献

英文题名：Porosity Modulation in Two-Dimensional Covalent Organic Frameworks Leads to Enhanced Iodine Adsorption Performance

作者：An, Shuhao[1];Zhu, Xiang[2,3];He, Yanyan[1];Yang, Lan[1];Wang, Hai[3];Jin, Shangbin[4];Hu, Jun[1];Liu, Honglai[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Lanzhou Inst Chem Phys, Suzhou Res Inst, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China;[3]Texas A&M Univ, Dept Chem, College Stn, TX 77840 USA;[4]Huazhong Univ Sci & Technol, Key Lab Mat Chem Energy Convers & Storage, Minist Educ, Sch Chem & Chem Engn, Luoyu Rd 1037, Wuhan 430074, Peoples R China

年份：2019

卷号：58

期号：24

起止页码：10495

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20192607113576);WOS:【SCI-EXPANDED(收录号:WOS:000472683200034)】；

基金：The research was supported by the National Natural Science Foundation of China (No. 91834301, 51621002), the Fundamental Research Funds for the Central Universities of China, and the 111 Project of Ministry of Education of China (No. B08021).

语种：英文

外文关键词：Separation - Scaffolds - Pore size - Modulation

摘要：Covalent organic frameworks (COFs) with atomically precise integration of scaffolds into 2D/3D topologies have shown great promise for separation applications. In this work, a porosity modulation approach was developed for the construction of 2D COFs for efficient volatile iodine adsorption. By rationally turning building blocks, significantly different iodine separation performance was obtained on COFs, where the best COF adsorbent exhibits a high-performance volatile iodine uptake of 4.0 g g(-1) at 75 degrees C and under ambient pressure and full pore access of iodine was achieved. Most importantly, the separation experiments reveal that iodine uptake capacities on COFs are not only determined by their pore volumes but also significantly affected by their intrinsic pore sizes. Both should be regulated simultaneously to work in concert when designing new COFs for the capture of volatile iodine.