Effects of High Gamma Doses on the Structural Stability of Metal-Organic Frameworks
C. Ma (TU Delft - RST/Applied Radiation & Isotopes)
H. Liu (TU Delft - RST/Applied Radiation & Isotopes)
HT Wolterbeek (TU Delft - RST/Applied Radiation & Isotopes)
A. G. Denkova (TU Delft - RST/Applied Radiation & Isotopes)
Pablo Serra Crespo (TU Delft - RST/Applied Radiation & Isotopes)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Four different MOFs were exposed to γrays by a cobalt-60 source reaching a maximum dose of 5 MGy. The results showed that the MIL-100 (Cr) and MIL-100 (Fe) did not exhibit obvious structural damage, suggesting their excellent radiation stability. MIL-101 (Cr) showed good radiation stability up to 4 MGy, but its structure started degrading with increasing radiation dose. Furthermore, the results showed that the structure of AlFu MOFs started to decompose at a gamma dose of 1 MGy, exhibiting a much lower tolerance to γradiation. At this radiation energy, the dominant interaction of the gamma-ray with MOFs is the Compton effect and the radiation stability of MOFs can be improved by prolific aromatic linkers, high linker connectivity, and good crystallinity. The results of this study indicate that MIL-100 and MIL-101 MOFs have a good potential to be employed in nuclear applications, where relatively high radiation doses play a role, for example, nuclear waste treatment and radionuclides production.
help_outline