载银钙基有机骨架材料的制备及其对Xe/Kr的吸附分离性能  

Preparation of silver-loaded Ca-based organic framework and its adsorption/separation properties for Xe/Kr

作　　者：吴小玲[1,2] 周鹤 张宁 钱楠[1] 郭冰[1] 黄豫[1] 李长园[1,2] 楚鑫新[1,2] 刘卫 WU Xiaoling;ZHOU He;ZHANG Ning;QIAN Nan;GUO Bing;HUANG Yu;LI Changyuan;CHU Xinxin;LIU Wei(Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院大学,北京100049

出　　处：《辐射研究与辐射工艺学报》2022年第1期88-95,共8页Journal of Radiation Research and Radiation Processing

基　　金：中国科学院青年创新促进会(2021254);国家自然科学基金(51606210);中国科学院上海应用物理研究所育新计划(YX 2019007)资助。

摘　　要：以钙基有机骨架材料(Ca-SINAP-1)为基体,将银离子在此材料上负载结合,成功制备出耐一定γ射线辐照(50 kGy)的载银钙基金属有机骨架材料。采用X射线衍射、扫描电子显微镜、比表面积与孔容孔径分析仪对其进行表征分析,并研究了载银金属有机骨架材料对Xe的吸附能力。结果表明:银离子负载于钙基金属有机骨架材料表面,材料结构未发生明显改变;样品载银量为0.93%,Xe的吸附量达到最高(3.29 mmol/g),此时Xe/Kr的分离系数为10.71。随着载银量增加,Xe的吸附量减小,表明过多银负载可能会导致材料孔道堵塞,并不利于Xe的吸附。对于熔盐实验堆放射性尾气的处理环境,此材料具有一定潜力。The Ca-based organic framework(Ca-SINAP-1)loaded with silver was successfully prepared,which has a certainγ-ray irradiation resistance of 50 kGy.X-ray diffraction,scanning electron microscopy,Brunauer Emmett-Teller specific surface area analysis,and pore volume analysis were used to characterize the sample and its Xe adsorption capacity.The results showed that loading of silver on the sample surface did not change the original structure of Ca-SINAP-1.However,the Xe uptake reached a maximum of 3.29 mmol/g and the Xe/Kr separation coefficient was 10.71 when silver loading was 0.93%.With increasing AgNO_(3) concentration in ethanol,the Xe adsorption quantity decreased because excess silver loading blocked the channels,and thus prevented Xe adsorption.The good irradiation resistance and high Xe/Kr selectivity make Ca-SINAP-1 a potential material for treating radioactive off-gas emitted from molten salt reactors.

关 键 词：Γ射线辐照 Xe/Kr吸附分离 载银 金属有机骨架材料 熔盐堆 

分 类 号：TL13[核科学技术—核能科学]