Characterization of self-damaged (U,Pu)N fuel used in the NIMPHE program

Carvajal-Nunez, Ursula; Prieur, Damien; Janssen, André; Wiss, T.; Cambriani, Andrea; Vermorel, Emmanuel; Scheinost, Andreas C.; Somers, J.

doi:10.1016/j.jnucmat.2013.07.069

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…This contrasts sharply with the case of uranyl hydrate compounds containing five equatorial oxygen atoms, providing a solid evidence for chelation of uranyl ion by compound 1 , given that all uranyl compounds in hexagonal bipyramid coordination contain ligand chelation . In addition, these equatorial bond distances are clearly longer than those in uranyl hydrate compounds but are similar to the UN interatomic distance of 2.44 Å observed in nitride fuels, further indicating that the amine donors play a key role in the inner-sphere coordination mechanism. Given these nitrogen sites are in large molar excess when the concentration of uranium is low, the uranyl coordination environment derived from the relatively high uranium loading samples is also informative and likely the same with cases of low uranium loading samples.…”

Section: Resultsmentioning

confidence: 61%

Highly Sensitive and Selective Uranium Detection in Natural Water Systems Using a Luminescent Mesoporous Metal–Organic Framework Equipped with Abundant Lewis Basic Sites: A Combined Batch, X-ray Absorption Spectroscopy, and First Principles Simulation Investigation

Liu

Dai

Bai

et al. 2017

Environ. Sci. Technol.

353

163

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Uranium is not only a strategic resource for the nuclear industry but also a global contaminant with high toxicity. Although several strategies have been established for detecting uranyl ions in water, searching for new uranium sensor material with great sensitivity, selectivity, and stability remains a challenge. We introduce here a hydrolytically stable mesoporous terbium(III)-based MOF material compound 1, whose channels are as large as 27 Å × 23 Å and are equipped with abundant exposed Lewis basic sites, the luminescence intensity of which can be efficiently and selectively quenched by uranyl ions. The detection limit in deionized water reaches 0.9 μg/L, far below the maximum contamination standard of 30 μg/L in drinking water defined by the United States Environmental Protection Agency, making compound 1 currently the only MOF material that can achieve this goal. More importantly, this material exhibits great capability in detecting uranyl ions in natural water systems such as lake water and seawater with pH being adjusted to 4, where huge excesses of competing ions are present. The uranyl detection limits in Dushu Lake water and in seawater were calculated to be 14.0 and 3.5 μg/L, respectively. This great detection capability originates from the selective binding of uranyl ions onto the Lewis basic sites of the MOF material, as demonstrated by synchrotron radiation extended X-ray adsorption fine structure, X-ray adsorption near edge structure, and first principles calculations, further leading to an effective energy transfer between the uranyl ions and the MOF skeleton.

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Section: Resultsmentioning

confidence: 61%

Highly Sensitive and Selective Uranium Detection in Natural Water Systems Using a Luminescent Mesoporous Metal–Organic Framework Equipped with Abundant Lewis Basic Sites: A Combined Batch, X-ray Absorption Spectroscopy, and First Principles Simulation Investigation

Liu

Dai

Bai

et al. 2017

Environ. Sci. Technol.

353

163

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show abstract

“…There has, in fact, been a recent surge in such measurements of nuclear energy materials in general, such as fuels [20][21][22] and fuel cladding and other materials (e.g. [23][24][25]), and even ion implanting in the semiconductor industry [26], not to mention a long history of such studies of nuclear waste forms (for a recent example, see Ref. [27]).…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature and radiation damage on the local atomic structure of metallic plutonium and related compounds

Booth

Olive

2016

Advances in Physics: X

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This focused review provides an overview and a framework for understanding local structure in metallic plutonium (especially the metastable fcc δ-phase alloyed with Ga) as it relates to self-irradiation damage. Of particular concern is the challenge of understanding self-irradiation damage in plutonium-bearing materials where theoretical challenges of the unique involvement of the 5f electrons in bonding limit the efficacy of molecular dynamics simulations and experimental challenges of working with radioactive material have limited the ability to confirm the results of such simulations and to further push the field forward. The main concentration is on extended X-ray absorption fine-structure measurements of δ-phase Pu, but the scope is broadened to include certain studies on plutonium intermetallics and oxides insofar as they inform the physics of damage and healing processes in elemental Pu. The studies reviewed here provide insight into lattice distortions and their production, damage annealing and defect migration, and the importance of understanding and controlling sample morphology when interpreting such experiments.

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Adsorption of uranium (VI) by metal-organic frameworks and covalent-organic frameworks from water

Mei

Liu

Yan

2023

Coordination Chemistry Reviews

136

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Characterization of self-damaged (U,Pu)N fuel used in the NIMPHE program

Cited by 5 publications

References 34 publications

Highly Sensitive and Selective Uranium Detection in Natural Water Systems Using a Luminescent Mesoporous Metal–Organic Framework Equipped with Abundant Lewis Basic Sites: A Combined Batch, X-ray Absorption Spectroscopy, and First Principles Simulation Investigation

Highly Sensitive and Selective Uranium Detection in Natural Water Systems Using a Luminescent Mesoporous Metal–Organic Framework Equipped with Abundant Lewis Basic Sites: A Combined Batch, X-ray Absorption Spectroscopy, and First Principles Simulation Investigation

Effect of temperature and radiation damage on the local atomic structure of metallic plutonium and related compounds

Adsorption of uranium (VI) by metal-organic frameworks and covalent-organic frameworks from water

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