Influence of Heat-Treatment Conditions on the Optical Properties of Bismuth-Containing Composites Based on High-Silica Porous Glass
- Autores: Girsova M.1, Anfimova I.1, Kurilenko L.1, Dikaya L.1
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Afiliações:
- Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
- Edição: Volume 45, Nº 6 (2019)
- Páginas: 592-595
- Seção: Short Communication
- URL: https://journals.rcsi.science/1087-6596/article/view/217763
- DOI: https://doi.org/10.1134/S1087659619060063
- ID: 217763
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Resumo
Bismuth-containing composite materials are synthesized by the impregnation of matrices of thermally modified porous glass (PG) in 0.5 M aqueous solutions of bismuth nitrate followed by heat treatment. The optical density spectra of the obtained materials are studied depending on the heat treatment temperature (400–870°C). When the temperature of the heat treatment is increased, the distribution of bismuth in the samples becomes more homogeneous. The heat treatment in the range of 650 to 870°C leads to the degree of bismuth oxidation changing from Bi3+ to Bi2+ ions with the formation of dimers and clusters of bismuth.
Sobre autores
M. Girsova
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
Autor responsável pela correspondência
Email: girsovamarina@rambler.ru
Rússia, St. Petersburg, 199034
I. Anfimova
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
Email: girsovamarina@rambler.ru
Rússia, St. Petersburg, 199034
L. Kurilenko
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
Email: girsovamarina@rambler.ru
Rússia, St. Petersburg, 199034
L. Dikaya
Grebenshchikov Institute of Silicate Chemistry, Russian Academy of Sciences
Email: girsovamarina@rambler.ru
Rússia, St. Petersburg, 199034