This research introduces a novel ultralight crystalline hybrid composite aerogel material for highly efficient radioiodine sequestration. The material, fabricated via covalent grafting of an amino-functionalized Zr(IV)-MOP with a dual-pore imine-functionalized COF, exhibits ultrahigh iodine adsorption capacities (9.98 g·g⁻¹ in vapor phase and 4.74 g·g⁻¹ in aqueous phase) due to its large surface area, hierarchical porosity, and multifunctional binding sites. The adsorbent also demonstrates fast kinetics, high retention efficiency, reusability, and recovery.

Sahel Fajal, Writakshi Mandal, Arun Torris, Dipanjan Majumder, Sumanta Let, Arunabha Sen, Fayis Kanheerampockil, Mandar M. Shirolkar, Sujit K. Ghosh