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Turkish Journal of Chemistry

Abstract

Exploring the materials that effectively capture radioactive iodine is crucial in managing nuclear waste produced from nuclear power plants. Herein, a β-ketoenamine-linked covalent organic framework (bCOF) was reported as an effective adsorbent to capture iodine from both vapor and solution. bCOF's high porosity and heteroatom-rich skeleton offer a notable iodine vapor uptake capacity of up to 2.51 g g-1 at 75 oC under ambient pressure. Furthermore, after five consecutive adsorption-desorption cycles, the bCOF demonstrates a high reusability performance with a significant iodine vapor capacity retention. The adsorption mechanism was also investigated using various ex-situ structural characterization techniques, and these mechanistic studies show the existence of a strong chemical interaction between bCOF and iodine. bCOF also shows a good iodine uptake performance up to 512 mg g-1 in cyclohexane with high removal efficiencies. The bCOF's performance in adsorbing iodine from both vapor and solution makes it a promising material to be used as an effective adsorbent in capturing radioactive iodine emissions from nuclear power plants.

Author ORCID Identifier

ONUR BÜYÜKÇAKIR: 0000-0003-4626-8232

DOI

10.55730/1300-0527.3684

Keywords

adsorbent materials, Covalent organic frameworks, environmental remediation, iodine capture, porous organic materials

First Page

631

Last Page

642

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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