Efficient capture of iodine and methyl iodide using all-silica EMM-17 zeolite

Tingting Pan, Xinglong Dong, Yu Han

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Hydrophobic zeolites have been identified as suitable adsorbents for capturing radioactive iodine species from nuclear-power-plant off-gas because of their high stability and strong water resistance. However, only the most common zeolites have been investigated for the capture of molecular iodine to date. Herein, we demonstrate that the composition and pore structure of zeolites considerably affect their iodine adsorption performance. A novel all-silica ExxonMobil material-17 (EMM-17) zeolite having a unique three-dimensional 10(12) × 10(12) × 11-ring channel system exhibits a high adsorption capacity for iodine and methyl iodide in the presence of water. EMM-17 outperforms previously reported zeolites in terms of gravimetric and volumetric adsorption capacity in dynamic adsorption measurements. The excellent iodine/methyl iodide capture properties are attributed to the combination of optimal pore size, high pore volume, strong hydrophobicity, and suitable particle morphology. This study provides useful insights for designing efficient adsorbents for iodine capture.
Original languageEnglish (US)
JournalNano Research
DOIs
StatePublished - Mar 18 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-03-27
Acknowledged KAUST grant number(s): FCC/1/1972-43-01
Acknowledgements: This research is supported by the AMPM CCF fund (No. FCC/1/1972-43-01) to Y. H. from King Abdullah University of Science and Technology.

ASJC Scopus subject areas

  • General Materials Science
  • Electrical and Electronic Engineering

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