Interplay between noble gases and MOFs: Insights from ¹²⁹Xe and ⁸³Kr NMR spectroscopy.

ABSTRACT: Efficient separation and storage of radioactive noble gas isotopes [krypton-85 (⁸⁵Kr) and xenon-131m/133/135 (^131m/133/135Xe)] from off-gas during spent nuclear fuel reprocessing are vital for environmental protection and noble gas recovery. Metal-organic frameworks (MOFs) are promising adsorbents, yet atomic-level insights into Xe and Kr adsorption remain limited. Here, we report the first application of high-field solid-state ⁸³Kr nuclear magnetic resonance (NMR), alongside extensive ¹²⁹Xe NMR, to investigate gas adsorption in eight MOFs representing three design strategies: ultramicroporous one-dimensional-channel MOFs with pore sizes matching noble gas diameters, functionalized MOFs, and MOFs with open metal sites. Single-gas and coadsorption

SUBMITTER: Zhang W 

PROVIDER: S-EPMC12506962 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature