表面改性
共价键
离子键合
化学
吸附
可重用性
离子强度
多元统计
碘
化学工程
水溶液
有机化学
计算机科学
物理化学
离子
工程类
程序设计语言
机器学习
软件
作者
Yaqiang Xie,Tingting Pan,Qiong Lei,Cailing Chen,Xinglong Dong,Youyou Yuan,Jie Shen,Yichen Cai,Chunhui Zhou,Ingo Pinnau,Yu Han
标识
DOI:10.1002/anie.202108522
摘要
Abstract Adsorption‐based iodine (I 2 ) capture has great potential for the treatment of radioactive nuclear waste. In this study, we apply a “multivariate” synthetic strategy to construct ionic covalent organic frameworks (iCOFs) with a large surface area, high pore volume, and abundant binding sites for I 2 capture. The optimized material iCOF‐AB‐50 exhibits a static I 2 uptake capacity of 10.21 g g −1 at 75 °C and a dynamic uptake capacity of 2.79 g g −1 at ≈400 ppm I 2 and 25 °C, far exceeding the performances of previously reported adsorbents under similar conditions. iCOF‐AB‐50 also exhibits fast adsorption kinetics, good moisture tolerance, and full reusability. The promoting effect of ionic groups on I 2 adsorption has been elucidated by experimentally identifying the iodine species adsorbed at different sites and calculating their binding energies. This work demonstrates the essential role of balancing the textural properties and binding sites of the adsorbent in achieving a high I 2 capture performance.
科研通智能强力驱动
Strongly Powered by AbleSci AI