Ultralight crystalline hybrid composite material for highly efficient sequestration of radioiodine

Sahel Fajal, Writakshi Mandal, Arun Torris, Dipanjan Majumder, Sumanta Let, Arunabha Sen, Fayis Kanheerampockil, Mandar M. Shirolkar and Sujit K. Ghosh ()
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Sahel Fajal: Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhaba Road, Pashan
Writakshi Mandal: Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhaba Road, Pashan
Arun Torris: CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road
Dipanjan Majumder: Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhaba Road, Pashan
Sumanta Let: Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhaba Road, Pashan
Arunabha Sen: Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhaba Road, Pashan
Fayis Kanheerampockil: CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road
Mandar M. Shirolkar: Advanced Bio-Agro Tech Pvt. Ltd, Baner
Sujit K. Ghosh: Indian Institute of Science Education and Research (IISER) Pune, Dr. Homi Bhaba Road, Pashan

Nature Communications, 2024, vol. 15, issue 1, 1-15

Abstract: Abstract Considering the importance of sustainable nuclear energy, effective management of radioactive nuclear waste, such as sequestration of radioiodine has inflicted a significant research attention in recent years. Despite the fact that materials have been reported for the adsorption of iodine, development of effective adsorbent with significantly improved segregation properties for widespread practical applications still remain exceedingly difficult due to lack of proper design strategies. Herein, utilizing unique hybridization synthetic strategy, a composite crystalline aerogel material has been fabricated by covalent stepping of an amino-functionalized stable cationic discrete metal-organic polyhedra with dual-pore containing imine-functionalized covalent organic framework. The ultralight hybrid composite exhibits large surface area with hierarchical macro-micro porosity and multifunctional binding sites, which collectively interact with iodine. The developed nano-adsorbent demonstrate ultrahigh vapor and aqueous-phase iodine adsorption capacities of 9.98 g.g−1 and 4.74 g.g−1, respectively, in static conditions with fast adsorption kinetics, high retention efficiency, reusability and recovery.

Date: 2024
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DOI: 10.1038/s41467-024-45581-9

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