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Radioactive Iodine Capture in Silver-Containing Mordenites through Nanoscale Silver Iodide Formation
Abstract
The effective capture and storage of radiological iodine ((129)I) remains a strong concern for safe nuclear waste storage and safe nuclear energy. Silver-containing mordenite (MOR) is a longstanding benchmark for iodine capture; however, the molecular level understanding of this process needed to develop more effective iodine getters has remained elusive. Here we probe the structure and distribution of iodine sorbed by silver-containing MOR using differential pair distribution function analysis. While iodine is distributed between gamma-AgI nanoparticles on the zeolite surface and subnanometer alpha-AgI clusters within the pores for reduced silver MOR, in the case of unreduced silver-exchanged MOR, iodine is exclusively confined to the pores as subnanometer alpha-AgI. Consequently, unreduced silver-containing zeolites may offer a more secure route for radioactive iodine capture, with the potential to more effectively trap the iodine for long-term storage.
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Cited by
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Valtchev, V., Majano, G., Mintova, S., & Pérez-Ramírez, J. (2013) · Chem. Soc. Rev. · doi:10.1039/c2cs35196j · Cited by 478
Competitive I2 Sorption by Cu-BTC from Humid Gas Streams
Sava, D. F., Chapman, K. W., Rodriguez, M. A., Greathouse, J. A., Crozier, P. S., Zhao, H., Chupas, P. J., & Nenoff, T. M. (2013) · Chemistry of Materials · doi:10.1021/cm401762g · Cited by 363
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Metadata
- Authors
- Chapman, K. W., Chupas, P. J., & Nenoff, T. M.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-06-15
- Volume
- 132
- Issue
- 26
- Pages
- 8897-8899
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2074815961
- Cited by
- 735
- References
- 0
- FWCI
- 21.75
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chapman, K. W., Chupas, P. J., & Nenoff, T. M. (2010). Radioactive Iodine Capture in Silver-Containing Mordenites through Nanoscale Silver Iodide Formation. Journal of the American Chemical Society. https://doi.org/10.1021/ja103110y
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