Float glass-type SiO₂-Na₂O-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 (T_g) 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 Sb³⁺ (Sb³⁺/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 [:SbO₃] polyhedra. XRF and Raman spectroscopies confirmed that SO₃ 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 Sb₂O₃ 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 ³P₁→¹S₀ transition of Sb³⁺, which is Stokes shifted by ~15,000 cm⁻¹ from the ¹S₀→³P₁ absorption at ~40,000 cm⁻¹. The most intense emission occurred at 0.5 mol% Sb₂O₃, with concentration quenching reducing luminescence intensities at higher Sb₂O₃ contents. Additions of Sb₂O₃ to float-type soda-lime-silica glasses could thus enable lower melting energies and/or new solar energy applications.

将具有0 – 10 mol％Sb ₂ O _3的浮法玻璃型SiO ₂ -Na ₂ O-CaO玻璃熔融，并对其组成，结构，热和光学性质进行表征。所有玻璃均为X射线非晶态，尽管坩埚腐蚀加剧导致Al ₂ O ₃含量增加，但Sb ₂ O ₃含量的增加却逐渐降低了玻璃化转变温度（T _g）和膨胀软化点（T _d）。¹²¹ SbMössbauer光谱证实Sb主要以Sb ³⁺（Sb ³⁺/ΣSb〜0.9）和拉曼光谱显示，Sb大大降低了平均（Si，Al）-OQ ⁿ形态。两种技术均证实Sb ³⁺离子已掺入三角锥型[：SbO ₃ ]多面体中。XRF和拉曼光谱证实，SO ₃含量随Sb ₂ O ₃含量的增加而降低。TGA分析表明，作为Sb ₂ O ₃含量的线性函数，质量增加从700°C开始，在1175°C达到最大值，然后在1175°C以上的质量损失，与氧化作用一致（Sb ³⁺  →Sb ⁵⁺）然后还原（Sb ⁵⁺  →Sb ³⁺）。TGA样品显示在测量过程中已达到或接近Sb氧化还原平衡。光学吸收光谱法（UV-Vis-nIR）显示，随着Sb ₂ O ₃含量的增加，UV吸收边缘发生红移，这与Sb ³⁺和Sb ⁵⁺ s→p跃迁的远紫外吸收带的强度增加相一致。UV-Vis-nIR荧光光谱法证明了以〜25,000 cm ^-1为中心的宽发光带，这归因于Sb ³⁺的³ P ₁ → ¹ S ₀跃迁，这是斯托克斯从¹ S偏移了〜15,000 cm ^-1。₀→ 〜40,000 cm ^-1处有³ P ₁吸收。最强烈的发射发生在0.5 mol％Sb ₂ O _3处，浓度猝灭降低了较高Sb ₂ O ₃含量下的发光强度。因此，将Sb ₂ O _3添加到浮法钠钙硅玻璃中可以实现较低的熔化能和/或新的太阳能应用。