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Abstract <p>Bismuth-containing composite materials (CMs) with variable silver content are synthesized by impregnating porous silicate glass matrices in acidified aqueous-salt solutions of Bi(NO<sub>3</sub>)<sub>3</sub>·5H<sub>2</sub>O in the presence of AgNO<sub>3</sub> with their subsequent heat treatment at 650 or 870°C and their luminescent properties are studied. The synthesized materials exhibit photoluminescence in a wide spectral range (220–900 nm) due to the presence of various active centers (Bi<sup>3+</sup>, Bi<sup>2+</sup>, Bi<sup>+</sup> ions, bismuth dimers, bismuth active centers (BACs) associated with silicon, Ag<sup>+</sup> ions, silver nanoclusters, silicon oxygen-deficient centers, =Si<sup>0</sup> centers).</p>

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Luminescent Properties of Composites Based on Silicate Porous Glasses Activated with Bismuth and Silver

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • M. A. Girsova,
  • I. N. Anfimova,
  • L. N. Kurilenko,
  • T. V. Antropova

摘要

Abstract

Bismuth-containing composite materials (CMs) with variable silver content are synthesized by impregnating porous silicate glass matrices in acidified aqueous-salt solutions of Bi(NO3)3·5H2O in the presence of AgNO3 with their subsequent heat treatment at 650 or 870°C and their luminescent properties are studied. The synthesized materials exhibit photoluminescence in a wide spectral range (220–900 nm) due to the presence of various active centers (Bi3+, Bi2+, Bi+ ions, bismuth dimers, bismuth active centers (BACs) associated with silicon, Ag+ ions, silver nanoclusters, silicon oxygen-deficient centers, =Si0 centers).