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  • Chen_et_al_Sb_SLS_JNCS_Final_R1

    Rights statement: This is the author’s version of a work that was accepted for publication in Journal of Non-Crystalline Solids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Non-Crystalline Solids, 544, 2020 DOI: 10.1016/j.jnoncrysol.2020.120184

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    Embargo ends: 5/08/21

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Composition-structure-property effects of antimony in soda-lime-silica glasses

Research output: Contribution to journalJournal article

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  • T.-Y. Chen
  • P. Rautiyal
  • S. Vaishnav
  • G. Gupta
  • H. Schlegl
  • R.J. Dawson
  • A.W. Evans
  • S. Kamali
  • J.A. Johnson
  • C.E. Johnson
  • P.A. Bingham
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Article number120184
<mark>Journal publication date</mark>15/09/2020
<mark>Journal</mark>Journal of Non-Crystalline Solids
Volume544
Number of pages16
Publication StatusPublished
Early online date10/07/20
<mark>Original language</mark>English

Abstract

Float glass-type SiO 2-Na 2O-CaO glasses with 0 – 10 mol% Sb2O3 were melted and their compositional, structural, thermal and optical properties characterised. All glasses were X-ray amorphous and increasing Sb2O3 content progressively decreased glass transition temperature (Tg) and dilatometric softening point (T d), despite increases in Al2O3 content from greater crucible corrosion. 121Sb Mössbauer spectroscopy confirmed that Sb was predominantly incorporated as Sb 3+ (Sb 3+/ΣSb ~ 0.9) and Raman spectroscopy showed that Sb substantially decreased average (Si, Al)-O Qn speciation. Both techniques confirmed that Sb3+ ions were incorporated in trigonal pyramidal [:SbO 3] polyhedra. XRF and Raman spectroscopies confirmed that SO 3 content decreased with increasing Sb2O3 content. TGA analysis showed, as a linear function of Sb2O3 content, mass gain commencing at 700°C, reaching a maximum at 1175°C, then mass loss above 1175°C, consistent with oxidation (Sb3+ → Sb5+) then reduction (Sb5+ → Sb3+). The TGA samples were shown to have attained or approached Sb redox equilibrium during measurement. Optical absorption spectroscopy (UV-Vis-nIR) showed red-shifts of the UV absorption edge with increasing Sb 2O 3 content, consistent with increasing intensity of far-UV absorption bands from Sb3+ and Sb5+ s→p transitions. UV-Vis-nIR fluorescence spectroscopy evidenced a broad luminescence band centred at ~25,000 cm−1, attributed to the 3P 11S 0 transition of Sb 3+, which is Stokes shifted by ~15,000 cm −1 from the 1S03P1 absorption at ~40,000 cm−1. The most intense emission occurred at 0.5 mol% Sb 2O3, with concentration quenching reducing luminescence intensities at higher Sb 2O3 contents. Additions of Sb2O3 to float-type soda-lime-silica glasses could thus enable lower melting energies and/or new solar energy applications.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Journal of Non-Crystalline Solids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Non-Crystalline Solids, 544, 2020 DOI: 10.1016/j.jnoncrysol.2020.120184