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Effects of High Gamma Doses on the Structural Stability of Metal–Organic Frameworks
Langmuir ( IF 3.7 ) Pub Date : 2022-07-11 , DOI: 10.1021/acs.langmuir.2c01074
Chao Ma 1 , Huanhuan Liu 1 , Hubert T Wolterbeek 1 , Antonia G Denkova 1 , Pablo Serra Crespo 1
Langmuir ( IF 3.7 ) Pub Date : 2022-07-11 , DOI: 10.1021/acs.langmuir.2c01074
Chao Ma 1 , Huanhuan Liu 1 , Hubert T Wolterbeek 1 , Antonia G Denkova 1 , Pablo Serra Crespo 1
Affiliation
Four different MOFs were exposed to γ rays 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 γ radiation. 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.
中文翻译:
高伽马剂量对金属-有机框架结构稳定性的影响
钴 60 源将四种不同的 MOF 暴露于 γ 射线,最大剂量为 5 MGy。结果表明,MIL-100(Cr)和MIL-100(Fe)没有表现出明显的结构损伤,表明它们具有优异的辐射稳定性。MIL-101 (Cr) 在高达 4 MGy 时表现出良好的辐射稳定性,但其结构随着辐射剂量的增加而开始退化。此外,结果表明,AlFu MOFs 的结构在 1 MGy 的伽马剂量下开始分解,对 γ 辐射的耐受性要低得多。在此辐射能量下,伽马射线与 MOFs 的主要相互作用是康普顿效应,并且 MOFs 的辐射稳定性可以通过多产的芳族连接体、高连接体连接性和良好的结晶度来提高。
更新日期:2022-07-11
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
高伽马剂量对金属-有机框架结构稳定性的影响
钴 60 源将四种不同的 MOF 暴露于 γ 射线,最大剂量为 5 MGy。结果表明,MIL-100(Cr)和MIL-100(Fe)没有表现出明显的结构损伤,表明它们具有优异的辐射稳定性。MIL-101 (Cr) 在高达 4 MGy 时表现出良好的辐射稳定性,但其结构随着辐射剂量的增加而开始退化。此外,结果表明,AlFu MOFs 的结构在 1 MGy 的伽马剂量下开始分解,对 γ 辐射的耐受性要低得多。在此辐射能量下,伽马射线与 MOFs 的主要相互作用是康普顿效应,并且 MOFs 的辐射稳定性可以通过多产的芳族连接体、高连接体连接性和良好的结晶度来提高。