Research Progress on Radioactive Noble Gas Separation and Separation Materials

The radioactive noble gases xenon(¹³³Xe), krypton(⁸⁵Kr) and argon⁽³⁷Ar) are important gas fission products, which are mainly produced in human nuclear activities such as nuclear power reactors, underground nuclear tests and spent fuel reprocessing. Consequently, rapid and efficient separation, analysis and detection of the radioactive noble gases are of great significance in nuclear arms control and verification, nuclear environmental monitoring, nuclear fuel cycle and other fields. Currently, it is the simplest and most efficient method to efficiently capture and separate the target radioactive noble gas from a complex environmental atmosphere at ambient temperature by using adsorptive separation based on solid porous adsorbent materials. Recent years, the emerged new porous materials such as metal organic framework(MOF), porous organic frameworks(POF), covalent organic frameworks(COF), porous organic cage, etc have shown excellent performance and great potential on adsorptive separation of noble gases Xe and Kr. In this reviews, we discuss the recent advances of separation materials for radioactive noble gas(Xe, Kr and Ar) separation and the corresponding future prospects.