Fabrication, defect chemistry and microstructure of Mn-doped UO2
Abstract Mn-doped UO2 is under consideration for use as an accident tolerant nuclear fuel. We detail the synthesis of Mn-doped UO2 prepared via a wet co-precipitation method, which was refined to improve the yield of incorporated Mn. To verify the Mn-doped UO2 defect chemistry, X-ray absorption spec...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-50676-2 |
| _version_ | 1827377302151888896 |
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| author | H. Smith L. T. Townsend R. Mohun J. F. W. Mosselmans K. Kvashnina Neil C. Hyatt C. L. Corkhill |
| author_facet | H. Smith L. T. Townsend R. Mohun J. F. W. Mosselmans K. Kvashnina Neil C. Hyatt C. L. Corkhill |
| author_sort | H. Smith |
| collection | DOAJ |
| description | Abstract Mn-doped UO2 is under consideration for use as an accident tolerant nuclear fuel. We detail the synthesis of Mn-doped UO2 prepared via a wet co-precipitation method, which was refined to improve the yield of incorporated Mn. To verify the Mn-doped UO2 defect chemistry, X-ray absorption spectroscopy at the Mn K-edge was performed, in addition to X-ray diffraction, Raman spectroscopy and high-energy resolved fluorescence detection X-ray absorption near edge spectroscopy at the U M4-edge. It was established that Mn2+ directly substitutes for U4+ in the UO2 lattice, accompanied by oxygen vacancy (Ov) charge compensation. In contrast to other divalent-element doped UO2 materials, compelling evidence for U5+ in a charge compensating role was not found. This work furthers understanding of the structure and crystal chemistry of Mn-doped UO2, which could show potential advantages as a novel efficient advanced nuclear fuel. |
| first_indexed | 2024-03-08T12:37:05Z |
| format | Article |
| id | doaj.art-0c71c35b8e78439195561abf63715ac2 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-08T12:37:05Z |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-0c71c35b8e78439195561abf63715ac22024-01-21T12:21:45ZengNature PortfolioScientific Reports2045-23222024-01-0114111210.1038/s41598-023-50676-2Fabrication, defect chemistry and microstructure of Mn-doped UO2H. Smith0L. T. Townsend1R. Mohun2J. F. W. Mosselmans3K. Kvashnina4Neil C. Hyatt5C. L. Corkhill6Department of Materials Science and Engineering, The University of SheffieldDepartment of Materials Science and Engineering, The University of SheffieldDepartment of Materials Science and Engineering, The University of SheffieldDiamond Light Source, Harwell Science and Innovation CampusInstitute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR)School of Mechanical and Materials Engineering, Washington State UniversityDepartment of Materials Science and Engineering, The University of SheffieldAbstract Mn-doped UO2 is under consideration for use as an accident tolerant nuclear fuel. We detail the synthesis of Mn-doped UO2 prepared via a wet co-precipitation method, which was refined to improve the yield of incorporated Mn. To verify the Mn-doped UO2 defect chemistry, X-ray absorption spectroscopy at the Mn K-edge was performed, in addition to X-ray diffraction, Raman spectroscopy and high-energy resolved fluorescence detection X-ray absorption near edge spectroscopy at the U M4-edge. It was established that Mn2+ directly substitutes for U4+ in the UO2 lattice, accompanied by oxygen vacancy (Ov) charge compensation. In contrast to other divalent-element doped UO2 materials, compelling evidence for U5+ in a charge compensating role was not found. This work furthers understanding of the structure and crystal chemistry of Mn-doped UO2, which could show potential advantages as a novel efficient advanced nuclear fuel.https://doi.org/10.1038/s41598-023-50676-2 |
| spellingShingle | H. Smith L. T. Townsend R. Mohun J. F. W. Mosselmans K. Kvashnina Neil C. Hyatt C. L. Corkhill Fabrication, defect chemistry and microstructure of Mn-doped UO2 Scientific Reports |
| title | Fabrication, defect chemistry and microstructure of Mn-doped UO2 |
| title_full | Fabrication, defect chemistry and microstructure of Mn-doped UO2 |
| title_fullStr | Fabrication, defect chemistry and microstructure of Mn-doped UO2 |
| title_full_unstemmed | Fabrication, defect chemistry and microstructure of Mn-doped UO2 |
| title_short | Fabrication, defect chemistry and microstructure of Mn-doped UO2 |
| title_sort | fabrication defect chemistry and microstructure of mn doped uo2 |
| url | https://doi.org/10.1038/s41598-023-50676-2 |
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