Sami Soudani

About me

I joined the NOME group in January 2025 to contribute expertise in short and medium-range ordering in silicate-based glass, focusing on the behavior of halogens and volatile elements (H2O, CO2, S…) in nuclear waste glass.

My PhD research at the Nantes Université, France, focused on iodine immobilization in Low Activity Waste glass (LAW), employing high-pressure conditions up to 2 GPa (20 kbar) to enhance retention. I investigated the pressure effects on network and non-network forming cations’ short-range ordering and studied iodine’s impact on glass structure using a wide range of analytical techniques, including Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), SEM/EDS, LA-ICP-MS, and Solid-State Magic Angle Spinning Nuclear Magnetic Resonance (MAS NMR). These methodologies allowed me to observe changes from short to medium-range structures, that could thus be correlated with macroscopic properties like normalized loss and mechanical resistance.

My studies on iodine led me to explore various glass compositions, from simple alkali and earth-alkali ABS to bismuth-containing glasses, where the latter significantly influenced iodine retention and ABS backbone properties. Based on my expertise in glass structure and iodine behavior, I actively participate in glass-related projects within the group and conduct experiments to improve our understanding of silico-phosphate glasses and the effect of bismuth on phase separation in nuclear waste glasses.

Sami Soudani

Publications

  • Morizet, Y., Trcera, N., Suzuki-Muresan, T., Soudani, S., Fonda, E., & Paris, M. (2022). Local environment of iodine dissolved as iodate in high-pressure aluminoborosilicate glasses: AI K-edge x-ray absorption spectroscopic study. The Journal of Chemical Physics, 156(15).
  • Soudani, S., Le Gars, L., Morizet, Y., Deniard, P., Gautron, E., & Grolleau, S. (2023). High-pressure glass-ceramics for iodine nuclear waste immobilization: Preliminary experimental results. Ceramics International, 49(18), 30029-30038.
  • Morizet, Y., Soudani, S., Hamon, J., Paris, M., La, C., & Gautron, E. (2023). Iodine dissolution mechanisms in high-pressure aluminoborosilicate glasses and their relationship to oxygen speciation. Journal of Materials Chemistry A, 11(42), 22891-22905.
  • Soudani, S., Paris, M., & Morizet, Y. (2024). The effect of iodine on the local environment of network‐forming elements in aluminoborosilicate glasses: An NMR study. Journal of the American Ceramic Society, 107(7), 4557-4571.
  • Soudani, S., Paris, M., & Morizet, Y. (2024). Influence of high-pressure on the short-range structure of Ca or Na aluminoborosilicate glasses from 11B and 27Al solid-state NMR. Journal of Non-Crystalline Solids, 638, 123085.
  • Hu, H., Soudani, S., Hamon, J., Trcera, N., Paris, M., & Morizet, Y. (2024). Multi-Spectroscopic Investigations for Comprehensive Structural Analysis of Aluminoborosilicate Glasses: I. Integrating Raman, XPS, XAS and NMR Techniques. Glass Europe, 2, 181-211.
  • Hu, H., Soudani, S., Hamon, J., Trcera, N., Paris, M., & Morizet, Y. (2024). Multi-Spectroscopic Investigations for Comprehensive Structural Analysis of Aluminoborosilicate Glasses: II. Relation between the glass structure and chemical properties. Glass Europe, 2, 213-231.
  • Haryouli, G., Soudani, S., Grolleau, S., Paris, M., & Morizet, Y. (2025). The effect of pressure on the aluminoborosilicate glass optical basicity. Journal of the American Ceramic Society, e20359.