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Easily Constructed Imine-Bonded COFs for Iodine Capture at Ambient Temperature
[Image: see text] Volatile radionuclides generated during the nuclear fission process, such as iodine, pose risks to public safety and cause the threat of environmental pollution. Covalent organic framework (COF) materials have a controlled pore structure and a large specific surface area and thus d...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7528167/ https://www.ncbi.nlm.nih.gov/pubmed/33015443 http://dx.doi.org/10.1021/acsomega.0c02382 |
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author | Sun, Yonghe Song, Sanan Xiao, Dehai Gan, Linfeng Wang, Yuanrui |
author_facet | Sun, Yonghe Song, Sanan Xiao, Dehai Gan, Linfeng Wang, Yuanrui |
author_sort | Sun, Yonghe |
collection | PubMed |
description | [Image: see text] Volatile radionuclides generated during the nuclear fission process, such as iodine, pose risks to public safety and cause the threat of environmental pollution. Covalent organic framework (COF) materials have a controlled pore structure and a large specific surface area and thus demonstrate great opportunities in the field of radioactive iodine adsorption. However, the harsh synthetic conditions and the weak binding capability toward iodine have significantly restricted the applications of COFs in iodine adsorption. Here, we demonstrate a facile way to prepare a series of stable C–N-linked COFs with high efficiency to capture radioactive iodine species. Large-scale synthesis can be conducted by the aldol condensation reaction at room temperature. The resulting COFs have a large surface area and a strong resistance to acid, base, and water. Moreover, all types of COFs show high iodine adsorption, up to 2.6 g/g (260% in mass), owing to the large surface area and the functional groups in COFs. They not only absorb conventional I(2) molecular but also ionic state (I(3)(–) and I(+)) iodine species. Theoretical calculations are further performed to understand the relationship between different iodine species and the functional groups of all COFs, offering the mechanisms underlying the potent adsorption abilities of COFs. |
format | Online Article Text |
id | pubmed-7528167 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-75281672020-10-02 Easily Constructed Imine-Bonded COFs for Iodine Capture at Ambient Temperature Sun, Yonghe Song, Sanan Xiao, Dehai Gan, Linfeng Wang, Yuanrui ACS Omega [Image: see text] Volatile radionuclides generated during the nuclear fission process, such as iodine, pose risks to public safety and cause the threat of environmental pollution. Covalent organic framework (COF) materials have a controlled pore structure and a large specific surface area and thus demonstrate great opportunities in the field of radioactive iodine adsorption. However, the harsh synthetic conditions and the weak binding capability toward iodine have significantly restricted the applications of COFs in iodine adsorption. Here, we demonstrate a facile way to prepare a series of stable C–N-linked COFs with high efficiency to capture radioactive iodine species. Large-scale synthesis can be conducted by the aldol condensation reaction at room temperature. The resulting COFs have a large surface area and a strong resistance to acid, base, and water. Moreover, all types of COFs show high iodine adsorption, up to 2.6 g/g (260% in mass), owing to the large surface area and the functional groups in COFs. They not only absorb conventional I(2) molecular but also ionic state (I(3)(–) and I(+)) iodine species. Theoretical calculations are further performed to understand the relationship between different iodine species and the functional groups of all COFs, offering the mechanisms underlying the potent adsorption abilities of COFs. American Chemical Society 2020-09-16 /pmc/articles/PMC7528167/ /pubmed/33015443 http://dx.doi.org/10.1021/acsomega.0c02382 Text en This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Sun, Yonghe Song, Sanan Xiao, Dehai Gan, Linfeng Wang, Yuanrui Easily Constructed Imine-Bonded COFs for Iodine Capture at Ambient Temperature |
title | Easily Constructed Imine-Bonded COFs for Iodine Capture
at Ambient Temperature |
title_full | Easily Constructed Imine-Bonded COFs for Iodine Capture
at Ambient Temperature |
title_fullStr | Easily Constructed Imine-Bonded COFs for Iodine Capture
at Ambient Temperature |
title_full_unstemmed | Easily Constructed Imine-Bonded COFs for Iodine Capture
at Ambient Temperature |
title_short | Easily Constructed Imine-Bonded COFs for Iodine Capture
at Ambient Temperature |
title_sort | easily constructed imine-bonded cofs for iodine capture
at ambient temperature |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7528167/ https://www.ncbi.nlm.nih.gov/pubmed/33015443 http://dx.doi.org/10.1021/acsomega.0c02382 |
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