Rational design of a cationic polymer network towards record high uptake of ^(99)TcO_(4)^(-)in nuclear waste

作     者：Jie Li Long Chen Nannan Shen Rongzhen Xie Matthew VSheridan Xijian Chen Daopeng Sheng Duo Zhang Zhifang Chai Shuao Wang Jie Li;Long Chen;Nannan Shen;Rongzhen Xie;Matthew V.Sheridan;Xijian Chen;Daopeng Sheng;Duo Zhang;Zhifang Chai;Shuao Wang

作者机构：State Key Laboratory of Radiation Medicine and ProtectionSchool for Radiological and Interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064China 

基　　金：supported by the National Natural Science Foundation of China(21790374,21825601,21806117,21906114,22006108) the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) the National Key R&D Program of China(2018YFB1900203) 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2021年第64卷第7期

页      码：1251-1260页

摘      要：^(99)Tc is a long-lived radionuclide present in large amounts as TcO_(4)^(-)-anion in used nuclear *** removal from the waste stream is highly desirable because of its interference capability with actinide separation and its volatile nature during the nuclear waste vitrification *** the progress achieved in the past few years,the design of anion-exchange materials with optimized Tc uptake property and improved stability under the extreme condition is still a research goal beneficial for reducing the volume of secondary radioactive solid waste generated during the waste partitioning ***,their design philosophy remains elusive,with challenges coming from charge repulsion,steric hindrance,and insufficient reactive sites within the ***,we present a design philosophy of cationic polymer network materials for TcO_(4)^(-)separation by systematic precursor screening and structure *** affords an optimized material,SCU-CPN-2(SCU=Soochow University),with extremely high positive charge density while maintaining high radiation ***-CPN-2 exhibits a record high adsorption capacity1,467 mg/g towards the surrogate ReO_(4)^(-)compared to all anion-exchange materials reported up to *** addition to ultrafast adsorption kinetics,SCU-CPN-2 has remarkable selectivity over nitrate and sulfate,and facile recyclability.

主 题 词：pertechnetate perrhenate adsorption adsorption capacity cationic organic polymer 

学科分类：082704[082704] 08[工学] 0805[工学-能源动力学] 080502[080502] 0827[工学-食品科学与工程类] 

核心收录：

D　O　I：10.1007/s11426-020-9962-9

馆 藏 号：203103371...