吸附
化学
碘
锆
铀
可重用性
环境修复
裂变产物
环境化学
放射化学
吸附
无机化学
污染
有机化学
冶金
生态学
材料科学
软件
计算机科学
生物
程序设计语言
作者
Chuan Seng Tan,Z. Xu,Lilin Zhang,M. Lei,Jiehong Lei,Tao Duan,Wei Liu
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2022-03-15
卷期号:61 (12): 4818-4824
被引量:12
标识
DOI:10.1021/acs.inorgchem.1c03159
摘要
Iodine radioisotope, as one of the most important fission products of uranium, may cause severe damage to human health when it is accidentally discharged into the environment. Hence, efficient removal of radioactive iodine is one of the most critical issues for both used nuclear fuel (UNF) reprocessing and environmental remediation. In this work, three metal-organic gels (MOGs) were introduced for iodine removal. The presented zirconium-based MOGs, namely, CWNU, CWNU-NH2, and CWNU-2NH2, were prepared via moderate solvothermal reactions. These MOGs all exhibit excellent chemical stability and reusability, marked iodine sorption capability, and favorable machinability, which can even rival commercial ones. The sorption capacities are determined to be 3.36, 4.10, and 4.20 g/g, respectively. The increased amount of amino group is considered to be responsible for the elevated iodine sorption capacity and kinetics, as confirmed by combined sorption studies and XPS analysis. The presented work sheds light on the utilization of MOGs for radioiodine capture.
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