Synthesis of eco-friendly borosilicate glass with Eu3+ dopants: Harnessing recovered silica gel waste for reddish-orange emission materials

P. Manyum, W. Rittisut, N. Wantana, Y. Ruangtaweep, W. Rachniyom, S. Rujirawat, K. Kamonsuangkasem, R. Yimnirun, A. Prasatkhetragarn, N. Intachai, S. Kothan, H. J. Kim, J. Kaewkhao

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, recovered silica gel waste (RSGW) is used as a key raw material to create borosilicate glass doped with Eu3+ ions in a new and environmentally friendly way. The glass compositions were fabricated using the melt quenching method, with different amounts of RSGW and a constant 1.0 mol% Eu3+ doping concentration. The study shows that increasing the doping concentration of RSGW improves the glass density and rigidity while reducing the molar volume, indicating enhanced glass stability. Photoluminescence and X-ray luminescence analyses confirm that the optimal composition with 50 mol% RSGW exhibits the strongest emission. Based on the phonon sideband analysis, the host glasses have a phonon energy of 966.53 cm− 1. An X-ray absorption near-edge structure (XANES) analysis showed that most of the europium ions were in the 3+ oxidation state. The CIE 1931 chromaticity investigation shows the x,y color coordinates at (0.645, 0.351) in the reddish-orange region. To optimize the doping concentration of Eu2O3, it was determined that a fixed concentration of 50 mol% RSGW created the most suitable mixture. Both luminescence emission spectra exhibit strong luminescence, with a peak emission wavelength of 615 nm (⁵D0→⁷F2), confirming concentration quenching in both photoluminescence and x-ray luminescence at a concentration of 1.0 mol%. The study explores potential applications of this novel material in photonics and suggests that this eco-friendly synthesis approach holds great promise for sustainable and efficient production of reddish-orange emission materials.

Original languageEnglish
Article number111838
JournalRadiation Physics and Chemistry
Volume222
DOIs
StatePublished - Sep 2024

Keywords

  • Eu ions
  • Melt quenching method
  • Recovered silica gel waste

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