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<p>Bi<sub>2</sub>O<sub>3</sub>/Bi<sub>2</sub>SiO<sub>5</sub> oxide photocatalysts are obtained by mechanochemical activation of a mixture of bismuth(III) oxide and biogenic silica from rice husks. The characteristics of the materials are presented using IR spectroscopy, X-ray phase analysis, and X-ray fluorescence analysis. The silica content in the photocatalysts is optimized using a mathematical function describing the dependence of the degree of methyl orange degradation on the amount of SiO<sub>2</sub> in the Bi<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub> system.</p>

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Optimization of Biogenic Silica Content in SiO2/Bi2O3 Mixture for Obtaining Efficient Photocatalysts by Mechanochemical Activation Method

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • O. D. Arefieva,
  • M. S. Vasilyeva,
  • A. I. Slavenskaya,
  • I. M. Efimov,
  • D. Kh. Shlyk

摘要

Bi2O3/Bi2SiO5 oxide photocatalysts are obtained by mechanochemical activation of a mixture of bismuth(III) oxide and biogenic silica from rice husks. The characteristics of the materials are presented using IR spectroscopy, X-ray phase analysis, and X-ray fluorescence analysis. The silica content in the photocatalysts is optimized using a mathematical function describing the dependence of the degree of methyl orange degradation on the amount of SiO2 in the Bi2O3–SiO2 system.