Selective Crystallization of a Highly Radiation-Resistant Isonicotinic Acid-Based Metal–Organic Framework as a Primary Actinide Waste Form
Kai Lv, Michael Patzschke, Juliane März, Elena Bazarkina, Kristina O. Kvashnina, Moritz Schmidt
Abstract
Isonicotinic acid (INA), as a prototypical N,O-donor bifunctional ligand, has demonstrated its ability to differentiate Th 4+ from representative ions for products in spent nuclear fuels (Cs +, Ba 2+, Mn 2+, Fe 2+, Fe 3+, Co 2+, Ni 2+, Cu 2+, Pd 2+, ReO 4 –, La 3+, Ce 3+, Ce 4+, UO 2 2+ ), yielding an actinide metal–organic framework, Th-INA-1, by selective crystallization. This unprecedented motif with the highest ligand-binding number (i.e., 16) shows promise as a primary waste form due to its structural integrity, especially exposed to β- or γ-irradiation to achieve doses of 6 MGy.
Topics & Concepts
Isonicotinic acidActinideChemistryLanthanideBifunctionalCrystallizationLigand (biochemistry)Metal-organic frameworkMetalRadioactive wasteNuclear chemistryMetal ions in aqueous solutionInorganic chemistryIonRadiochemistryOrganic chemistryHydrazideAdsorptionBiochemistryCatalysisReceptorRadioactive element chemistry and processingMetal-Organic Frameworks: Synthesis and ApplicationsNuclear materials and radiation effects