Iodine dissolution mechanisms in high-pressure aluminoborosilicate glasses and their relationship to oxygen speciation

Morizet, Yann; Soudani, Sami; Hamon, Jonathan; Paris, Michael; La, Carole; Gautron, Eric

doi:10.1039/d3ta05344j

J. Mater. Chem. A

2023

DOI: 10.1039/d3ta05344j

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Iodine dissolution mechanisms in high-pressure aluminoborosilicate glasses and their relationship to oxygen speciation

Yann Morizet,

Sami Soudani,

Jonathan Hamon

et al.

Abstract: Incorporation of iodine into high-pressure vitrified glasses is a strong function of alkali content. The vitrification under high-pressure conditions could represent a potential solution for the immobilization of 129I radioisotopes.

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Cited by 5 publications

References 87 publications

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Influence of high-pressure on the short-range structure of Ca or Na aluminoborosilicate glasses from 11B and 27Al solid-state NMR

Soudani,

Paris,

Morizet

2024

Journal of Non-Crystalline Solids

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Influence of high-pressure on the short-range structure of Ca or Na aluminoborosilicate glasses from 11B and 27Al solid-state NMR

Soudani,

Paris,

Morizet

2024

Journal of Non-Crystalline Solids

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In-situ engineering of 3D porous Co nanoparticles incorporated in B/N Co-doped carbon nanotube/nanofiber networks as integrated cathode materials for Zn-air batteries

Lin,

Cui,

Liu

et al. 2023

Materials Characterization

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The effect of iodine on the local environment of network‐forming elements in aluminoborosilicate glasses: An NMR study

Soudani,

Paris,

Morizet

2024

J Am Ceram Soc.

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Knowledge of the structural organization of nuclear waste glasses at the atomic scale is the basis for further studies of macroscopic properties (e.g., fracture toughness, chemical durability, and leaching rate). Recent studies have focused on the iodine dissolution mechanism in oxide‐based glasses synthesized under high‐pressure conditions, but there is still a lack of key information on the extent of the modifications caused by iodine entering the glass network. We therefore decided to conduct an in‐depth study by nuclear magnetic resonance on two series of aluminoborosilicate glasses synthetized under high pressure conditions and doped with either I2 or I2O5. The obtained 11B, 23Na, and 27Al nuclear magnetic resonance (NMR) spectra were fitted and correlated with the iodine content in order to find possible relationships with the local environment change for the probed cations. These data showed that iodine has no effect on the coordination of aluminum and very little effects on that of boron. In contrast, we found an expected relationship of the I content with the 23Na NMR parameters. In comparison with previous studies on the non‐bridging oxygen (NBO) distribution in aluminoborosilicate, we suggest that Na+ is mainly scavenged from silica tetrahedra with one or two NBO ( or ) as no boron planar triangles with one NBO are expected for such compositions. From those information, we establish a model for iodine dissolution in nuclear waste glass that is consistent with previous studies.

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Iodine dissolution mechanisms in high-pressure aluminoborosilicate glasses and their relationship to oxygen speciation

Abstract: Incorporation of iodine into high-pressure vitrified glasses is a strong function of alkali content. The vitrification under high-pressure conditions could represent a potential solution for the immobilization of 129I radioisotopes.

Cited by 5 publications

References 87 publications

Influence of high-pressure on the short-range structure of Ca or Na aluminoborosilicate glasses from 11B and 27Al solid-state NMR

Influence of high-pressure on the short-range structure of Ca or Na aluminoborosilicate glasses from 11B and 27Al solid-state NMR

In-situ engineering of 3D porous Co nanoparticles incorporated in B/N Co-doped carbon nanotube/nanofiber networks as integrated cathode materials for Zn-air batteries

The effect of iodine on the local environment of network‐forming elements in aluminoborosilicate glasses: An NMR study

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