Selective capture of iodate anions by a cerium-based metal-organic framework
Effective remediation of radioactive IO<sub>3</sub><sup>−</sup> is highly desirable for fuel reprocessing, medical waste disposal, and nuclear accidents. However, the nature of high solubility, strong mobility, and extremely hard to bind with minerals for IO<sub>3</s...
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| Format: | Article |
| Language: | English |
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Science Press
2024-09-01
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| Series: | National Science Open |
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| Online Access: | https://www.sciengine.com/doi/10.1360/nso/20240003 |
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| author | Zhao Yuting Li Jie Chen Long Guo Qi Li Lingyi He Linwei Zhai Fuwan Zhang Mingxing Chai Zhifang Wang Shuao |
| author_facet | Zhao Yuting Li Jie Chen Long Guo Qi Li Lingyi He Linwei Zhai Fuwan Zhang Mingxing Chai Zhifang Wang Shuao |
| author_sort | Zhao Yuting |
| collection | DOAJ |
| description | Effective remediation of radioactive IO<sub>3</sub><sup>−</sup> is highly desirable for fuel reprocessing, medical waste disposal, and nuclear accidents. However, the nature of high solubility, strong mobility, and extremely hard to bind with minerals for IO<sub>3</sub><sup>−</sup> makes this task an enormous challenge. Herein, a metal-organic framework material [Ce(IV)-MOF-808] with available Ce(IV) sites was used to efficiently remove IO<sub>3</sub><sup>−</sup>. Ce(IV)-MOF-808 exhibits superior selectivity and one of the highest adsorption capacities <sc>(623 mg·g<sup>−1</sup>)</sc> for IO<sub>3</sub><sup>−</sup> removal. Moreover, Ce(IV)-MOF-808 shows great adsorption performance for IO<sub>3</sub><sup>−</sup> at low concentrations, and the distribution coefficient (K<sub>d</sub>) value was calculated to be 2.60 × <sc>10<sup>6</sup> mL·g<sup>−1</sup>.</sc> The exceptional IO<sub>3</sub><sup>−</sup> uptake performance is attributed to the high affinity between Ce(IV) cluster and the oxyanion based on the comprehensive analysis of zeta potential and X-ray photoelectron spectroscopy (XPS) results, in which IO<sub>3</sub><sup>−</sup> can easily replace the weakly coordinated ligand and form a strong coordination structure of Ce-O-I-O<sub>2</sub>. More importantly, Ce(IV)-MOF-808 exhibits excellent uptake performance for IO<sub>3</sub><sup>−</sup> from both the simulated Beishan groundwater system and Hanford groundwater system in the dynamic column separation test, indicating the highly promising practical application of Ce(IV)-MOF-808 in IO<sub>3</sub><sup>−</sup> remediation from actual radioactive wastes. |
| format | Article |
| id | doaj-art-1b5cc6bb942f4a9d91d214434cc4fa6a |
| institution | OA Journals |
| issn | 2097-1168 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Science Press |
| record_format | Article |
| series | National Science Open |
| spelling | doaj-art-1b5cc6bb942f4a9d91d214434cc4fa6a2025-08-20T02:02:24ZengScience PressNational Science Open2097-11682024-09-01410.1360/nso/20240003eb33e642Selective capture of iodate anions by a cerium-based metal-organic frameworkZhao Yuting0Li Jie1Chen Long2Guo Qi3Li Lingyi4He Linwei5Zhai Fuwan6Zhang Mingxing7Chai Zhifang8Wang Shuao9[][][][][][][][][][]Effective remediation of radioactive IO<sub>3</sub><sup>−</sup> is highly desirable for fuel reprocessing, medical waste disposal, and nuclear accidents. However, the nature of high solubility, strong mobility, and extremely hard to bind with minerals for IO<sub>3</sub><sup>−</sup> makes this task an enormous challenge. Herein, a metal-organic framework material [Ce(IV)-MOF-808] with available Ce(IV) sites was used to efficiently remove IO<sub>3</sub><sup>−</sup>. Ce(IV)-MOF-808 exhibits superior selectivity and one of the highest adsorption capacities <sc>(623 mg·g<sup>−1</sup>)</sc> for IO<sub>3</sub><sup>−</sup> removal. Moreover, Ce(IV)-MOF-808 shows great adsorption performance for IO<sub>3</sub><sup>−</sup> at low concentrations, and the distribution coefficient (K<sub>d</sub>) value was calculated to be 2.60 × <sc>10<sup>6</sup> mL·g<sup>−1</sup>.</sc> The exceptional IO<sub>3</sub><sup>−</sup> uptake performance is attributed to the high affinity between Ce(IV) cluster and the oxyanion based on the comprehensive analysis of zeta potential and X-ray photoelectron spectroscopy (XPS) results, in which IO<sub>3</sub><sup>−</sup> can easily replace the weakly coordinated ligand and form a strong coordination structure of Ce-O-I-O<sub>2</sub>. More importantly, Ce(IV)-MOF-808 exhibits excellent uptake performance for IO<sub>3</sub><sup>−</sup> from both the simulated Beishan groundwater system and Hanford groundwater system in the dynamic column separation test, indicating the highly promising practical application of Ce(IV)-MOF-808 in IO<sub>3</sub><sup>−</sup> remediation from actual radioactive wastes.https://www.sciengine.com/doi/10.1360/nso/20240003iodatemetal-organic frameworkselectivitydistribution coefficientadsorption |
| spellingShingle | Zhao Yuting Li Jie Chen Long Guo Qi Li Lingyi He Linwei Zhai Fuwan Zhang Mingxing Chai Zhifang Wang Shuao Selective capture of iodate anions by a cerium-based metal-organic framework National Science Open iodate metal-organic framework selectivity distribution coefficient adsorption |
| title | Selective capture of iodate anions by a cerium-based metal-organic framework |
| title_full | Selective capture of iodate anions by a cerium-based metal-organic framework |
| title_fullStr | Selective capture of iodate anions by a cerium-based metal-organic framework |
| title_full_unstemmed | Selective capture of iodate anions by a cerium-based metal-organic framework |
| title_short | Selective capture of iodate anions by a cerium-based metal-organic framework |
| title_sort | selective capture of iodate anions by a cerium based metal organic framework |
| topic | iodate metal-organic framework selectivity distribution coefficient adsorption |
| url | https://www.sciengine.com/doi/10.1360/nso/20240003 |
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