Materials and processes for the effective capture and immobilization of radioiodine: A review

Metal–Organic Framework Based Microcapsules

“…POMs and sulfur source are added into reaction system simultaneously.W hen the concentration of them is precisely controlled, the anions compete with the organic ligands to partially break the infinite structures and weaken the rigidity of MOF reticular structures,t hus resulting in the formation of MBMs.T aking advantage of the composition and unique bowl-like structure of MBMs,t he MOF-based microcapsules are used as useful adsorbents to enrich and remove radioactive iodine which is liberated during nuclear accidents and nuclear fuel treatment. [29] TheM BMs were synthesized through as olvothermal reaction of cobalt(III) acetylacetonate [Co(acac) 3 Figure S1, Supporting Information) showed ab road peak assigned to (2, À1, 0), which was consistent with the reported M-BTC MOFs (M = Ni or Co). [30] Theabsence of some peaks might be ascribed to the nature of the bowl-like structure and the low crystallinity.The Fourier transform infrared spectrum (FT-IR) of MBM was recorded and is depicted in Figure S2, the stretching frequency of carboxylate red shifted to 1600 cm À1 from 1700 cm À1 compared to uncoordinated H 3 BTC,r evealing that the H 3 BTC units presented in the bowl-like structure and coordinated with metal ions.…”

Performance of CuII‐, PbII‐, and HgII‐Exchanged Mordenite in the Adsorption of I2, ICH3, H2O, CO, ClCH3, and Cl2: A Density Functional Study

“…One of the mosti nteresting technologiest oa ddress this issue is based on inorganic sorbentssuch as zeolites. [8][9][10][11][12][13][14][15][16] These materials have found widespreada pplications in adsorption and catalytic processes due to their unique properties:a bility to exchangei ons, high specific surface area, andr elatively low cost. In addition, good thermals tability and shape selectivity are among the factors that make zeolites extensively usable for this purpose.…”

87Sr, 119Sn, 127I Single and {1H/19F}‐Double Resonance Solid‐State NMR Experiments: Application to Inorganic Materials and Nanobuilding Blocks

“…Iodine occurs even more widely in materials science, notably because of its variety of oxidation states (from ‐I to +VII), and because it can be found not only as an anion (e. g. I − , IO 3 − , IO 4 − …) in inorganic materials, but also as part of an organic molecule in materials constructed on the basis of halogen‐bonding interactions for example . Among the different classes of materials involving iodine, those developed in view of the immobilization of radioactive iodine‐129, one of the longest half‐life radionuclides (∼ 16 × 10 6 years), are worth mentioning . In this context, apatite‐based ceramics have been shown to be an attractive and realistic option, allowing the incorporation of iodine in the form of iodide I − (using mixed vanadate/phosphate lead apatites as host matrices) or iodate IO 3 − (using calcium phosphate apatites) .…”