Stability and radioactive gaseous iodine-131 retention capacity of binderless UiO-66-NH granules under severe nuclear accidental conditions.

In the present work, we aim to investigate the ability of the zirconium-based MOF-type compound UiO-66-NH, to immobilize molecular gaseous iodine under conditions analogous to those encountered in an operating Filtered Containment Venting System (FCVS) line. Typically, the UiO-66-NH particles were exposed to I (beta and gamma emitters) and submitted to air/steam at 120 °C, under gamma irradiation (1.9 kGy h).