“…The capture of radioiodine (e.g., 131 I, 129 I) has been a topic of focus for many decades by the community studying the capture and immobilization of potential nuclear fuel reprocessing wastes and legacy nuclear weapons production wastes. − Iodine capture technologies discussed in the literature include various types of solution-based processes like Mercurex, , Iodox, electrolytic scrubbing, , and caustic scrubbing as well as solid sorbents including metal-exchanged ceramics such as mordenite (AgZ) or faujasite (AgX), chalcogen-based aerogels, − metal–organic frameworks, , granular activated carbon, graphene powders/aerogels, copper metal, Bi-compounds, Ag 0 -functionalized silica aerogels, , Ag-impregnated Al 2 O 3 , and Ag-impregnated SiO 2 . Many different metals have been evaluated with solid sorbents as getters for I 2 (g) including Ag, Bi, Cd, Cu, Hg, Mn, Pb, Pd, Sb, Sn, and Tl, ,,,− although Ag is one of the most effective getters tested to date due to strong chemisorption with iodine. In the current work, a new form of iodine sorbent is evaluated, which is an Ag 0 -functionalized aluminosilicate (Al–Si–O) aerogel.…”