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<p>This study investigates the structural and radiation shielding properties of a novel glass system with the general formula xBi₂O₃–(60 − x)MoO₃–10SrO–30Fe₂O₃ (where x = 12–60&#xa0;mol%), synthesized via the melt-quenching technique. Systematic substitution of MoO₃ by Bi₂O₃ was performed to evaluate its influence on glass density, molar volume, structural network, and gamma radiation shielding capacity across the photon energy range of 0.284–1.33&#xa0;MeV. Structural characterization was conducted using X-ray diffraction, FTIR, and Raman spectroscopy, while thermal stability was assessed via DSC. The results revealed that increasing Bi₂O₃ content enhanced density (from 5.29 to 7.91&#xa0;g/cm<sup>3</sup>) and molar mass (from 183.28 to 337.84&#xa0;g/mol), indicating a denser and more rigid network. Radiation shielding parameters such as linear attenuation coefficient (LAC), half-value layer (HVL), and effective atomic number (Z_eff) demonstrated that the glass sample with the highest Bi₂O₃ content (BMSF-5) exhibited superior shielding performance. Compared to conventional glasses, BMSF-5 presented significantly lower HVL values, underscoring its potential as a high-performance, lead-free shielding material. These findings contribute to the design of environmentally friendly glass materials for radiation protection applications.</p>

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Investigation of Bi2O3 influence on the structural and radiation shielding characteristics of MoO3-SrO-Fe2O3 glass system

  • 期刊论文

  • 发表日期：

    2025年7月18日

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  • Hicham Es-soufi,
  • Ahmed Ouaha,
  • Sabina Yasmin,
  • M. I. Sayyed,
  • Lahcen Bih

摘要

This study investigates the structural and radiation shielding properties of a novel glass system with the general formula xBi₂O₃–(60 − x)MoO₃–10SrO–30Fe₂O₃ (where x = 12–60 mol%), synthesized via the melt-quenching technique. Systematic substitution of MoO₃ by Bi₂O₃ was performed to evaluate its influence on glass density, molar volume, structural network, and gamma radiation shielding capacity across the photon energy range of 0.284–1.33 MeV. Structural characterization was conducted using X-ray diffraction, FTIR, and Raman spectroscopy, while thermal stability was assessed via DSC. The results revealed that increasing Bi₂O₃ content enhanced density (from 5.29 to 7.91 g/cm3) and molar mass (from 183.28 to 337.84 g/mol), indicating a denser and more rigid network. Radiation shielding parameters such as linear attenuation coefficient (LAC), half-value layer (HVL), and effective atomic number (Z_eff) demonstrated that the glass sample with the highest Bi₂O₃ content (BMSF-5) exhibited superior shielding performance. Compared to conventional glasses, BMSF-5 presented significantly lower HVL values, underscoring its potential as a high-performance, lead-free shielding material. These findings contribute to the design of environmentally friendly glass materials for radiation protection applications.