Synthetic Control of Thorium Metal-Organic Frameworks for Sequencing and Sensing of Radioiodine Species  

作　　者：Yu Ju Zi-Jian Li xue Wang Jie Qiu Yiuhon Chan Zhi-Hui Zhang Mingyang He Jian Lin 

机构地区：[1]Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology,Changzhou University,No.21,Gehu Middle Road,Changzhou,Jiangsu 213164,China [2]Schoolof Nuclear Science and Technology,Xi'an Jiaotong University,No.28,West Xianning Road,Xian,Shaanxi 710049,China [3]Key Laboratoryof Interfacial Physics and Technology,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,2019JiaLuoRoad,Shanghai 201800,China

出　　处：《Chinese Journal of Chemistry》2024年第1期20-28,I0004,共10页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(22076196,U22B20139,12175024,21906163,22276147,and 22076152).

摘　　要：Exploring the physiochemical properties and expanding the applications of actinide-containing materials is paramount to address the escalating challenge of radioactive waste accumulation.However,unlocking the full potential of these materials is largely crippled by the radiotoxicity of the actinides.We report here two porous and luminescent thorium-based metal-organic frameworks(Th-BITD-1 and Th-BITD-2)that serve as a bifunctional platform for sequencing and sensing of radioiodine,a much more radioactive fission product discharged during the nuclear fuel reprocessing.In particular,Th-BITD-1 displays better iodine uptake performance than Th-BITD-2 via the solution-based process and vapor diffusion with the maximum adsorption capacities of 831 and 1099 mg/g,respectively.Fur thermore,Th-BITD-1 can function as a highly sensitive luminescence sensor for iodate with a quenching constant(Ksv)of 6.6(5)×10^(3) M^(-1)and a detection limit of 2.02μM,respectively,outperforming 2.96(6)×10^(3)M^(-1)and 10.5μM of Th-BITD-2.Moreover,a positive correlation between the sensing efficacy and the iodate adsorption capacity has been revealed.This work highlights the opportunity in designing novel actinide-based MOFs for their potential applications in radiological fields,e.g.,radionuclide separation and detection.

关 键 词：THORIUM Metal-organic frameworks Adsorption Detection lodine ACTINIDES RADIOCHEMISTRY LUMINESCENCE 

分 类 号：O61[理学—无机化学]