锆基耐酸配位聚合物的分子设计及其对锶铯的吸附性能研究

The removal of Sr and Cs from radioactive waste liquid is one of the key issues closely related to the sustainable development of nuclear power. The development of adsorption materials for Sr and Cs adsorption has always been a hot topic in the field of nuclear industry. As a future star of porous materials, porous coordination polymer shows attractive prospect for the removal of radionuclides. However, the poor resistance to acid and salt in industrially aqueous system is the main bottleneck that limits the application of the porous materials in the treatment of radioactive liquid waste. This project aims to synthesize novel Zr-based acid-resistant coordination polymer and employs it for effective removal of Sr and Cs from radioactive liquid waste. By designing of the aperture and the functional group at the molecular level, it is expected to obtain high performance coordination polymers which show good selectivity to Sr and Cs. The reaction mechanism between Sr, Cs and the adsorbent will be clarified. The structure-activity relationship will be revealed. The implementation of this project will provide a new thought for removing Sr and Cs from waste liquid, and also provide theoretical basis for the application the new coordination polymer materials in the field of nuclear industry.

放射性废液中锶、铯的去除是关系到核能可持续发展的关键问题之一，对锶铯吸附材料的研究一直是核工业领域关注的重点课题。被誉为多孔材料未来之星的多孔配位聚合物在放射性核素吸附领域显示出诱人前景，但目前此类材料在工业水体系中的耐酸耐盐性不佳，成为限制该材料在放射性废液处理领域应用的主要瓶颈。本项目以设计合成新型锆基耐酸配位聚合物为目标，以其对放射性废液中锶铯的有效分离为目的，通过在分子层次上进行孔径和官能团设计，获得对溶液中锶铯具有高选择性吸附的性能良好的配位聚合物。阐明锶铯与吸附材料的作用机制，揭示材料结构和吸附性能之间的构效关系。为放射性废液中锶铯的有效去除提供新的思路，同时为开拓新型配位聚合物材料在核工业领域的应用提供理论依据。