{
  "abstract": "Iodine-129 radioisotope produced from nuclear plant activity is problematic in the environment due to its long half-life and high mobility. Incorporation of iodine into highpressure glasses represents a possible solution for its immobilisation, however, the matrix formulation is still under construction. Addition of Bi2O3 to standard low activity waste glass composition appears to be beneficial for iodine incorporation. Notwithstanding, the exact relationship between iodine and bismuth remains to be determined.\n\nWe investigated the local environment for Bi (up to 16 mol.% Bi2O3) in I-free and I-bearing aluminoborosilicate glasses using X-ray Absorption Spectroscopy. We show that Bi exists as several redox state in the glass structure: mainly Bi 3+ and small proportion of Bi 5+ ; and that the apparent average Bi valence decreases from ~3.6 to ~3.0 as Bi₂O₃ increases from 1 to 16 mol.%, reflecting a smaller NaBiO₃-like (Bi⁵⁺) contribution at high Bi₂O₃ content. The Bi coordination number to nearest neighbour also decreases consistent with an increase in BiO3 3- clusters and witnessing a more disordered structure. On average, the Bi local environment appears independent of iodine incorporation suggesting that it does not intervene in the Bi first coordination shell. The decrease in Avg. redox state is possibly accompanied by a decrease in the available Non-Bridging Oxygens in the near vicinity of Bi atoms required for iodine incorporation. As such, addition of Bi2O3 acting as a network modifier is beneficial for iodine incorporation to a certain level of concentration and matrix formulation should take that aspect into consideration.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "name": "Yann Morizet"
    },
    {
      "name": "Gabin Haryouli"
    },
    {
      "name": "Clémentine Lapie"
    },
    {
      "name": "Sami Soudani"
    },
    {
      "name": "Emiliano Fonda"
    },
    {
      "name": "Nicolas Trcera"
    },
    {
      "name": "Jonathan Hamon"
    },
    {
      "name": "Michael Paris"
    },
    {
      "name": "Lionel Campayo"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cb4h2a69qfpr2.bib",
  "cited_by": 0,
  "doi": "10.1016/j.jnucmat.2026.157050",
  "fulltext_url": null,
  "id": "cb4h2a69qfpr2",
  "issns": [
    "0022-3115",
    "1873-4820"
  ],
  "landing_url": "https://hal.science/hal-05794481v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "2503|Glass properties and applications"
    ]
  ],
  "openalex": "W7208759377",
  "pdf_url": "https://hal.science/hal-05794481/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-04",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/cb4h2a69qfpr2.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:54Z",
      "native_id": "hal-05794481",
      "source": "hal",
      "url": "https://hal.science/hal-05794481v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2503|Glass properties and applications",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Local environment of bismuth in iodine bearing aluminoborosilicate glasses: An X-ray Absorption Spectroscopic study at the Bi L3 edge",
  "title_text": "Local environment of bismuth in iodine bearing aluminoborosilicate glasses: An X-ray Absorption Spectroscopic study at the Bi L3 edge",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:54Z",
  "url": "https://research.draconitic.com/paper/cb4h2a69qfpr2",
  "venue": "Journal of Nuclear Materials",
  "versions": []
}