Abstract In the present work, two sets of glass compositions: (79.5-x) B2O3 + x P2O5 + 10 Na2O + 10 PbO + 0.5AgO and 54.5 B2O3 + (25-x) P2O5 + (10+x) Na2O + 10 PbO + 0.5AgO (x = 0, 5, 10, 15, 20, 25 mol%), were prepared and investigated by means of their density, molar volume, UV-Vis optical absorption, IR absorption and Raman spectroscopic methods. Both density and molar volume properties with x mol% of P2O5 and Na2O in glasses were discussed. The effects of P2O5, B2O3 and Na2O in the optical energy gap (Eopt) are also presented and discussed. In Raman analysis, an increase of P2O5 resulted in a clear conversion of B O 3 to B O 4 units with four non-bridging oxygens bonded to phosphate groups (P O B linkages, pyro- and ortho-phosphates) identified in all the spectra. With increasing Na2O, the metaphosphate network gets extensively depolymerized, resulting in the conversion of Q1 to Q° structural units. In IR absorption analysis, the addition of P2O5 at the expense of B2O3 resulted in the decrease of B O bonds with enhancements of P - O - and P = O bonds in P O 2 - groups. An increase of Na2O at the expense of P2O5, evinced a tendency of B O 4 tetrahedra/B O 3 trigonal to create diborate/pyroborate groups to accommodate excess amount of Na cations into the B O network.

中文翻译：

---

成分变化对硼磷酸盐玻璃结构性能的影响：ATR-FTIR 和拉曼光谱

摘要 在目前的工作中，两组玻璃成分：(79.5-x) B2O3 + x P2O5 + 10 Na2O + 10 PbO + 0.5AgO 和 54.5 B2O3 + (25-x) P2O5 + (10+x) Na2O + 10 PbO + 0.5AgO (x = 0, 5, 10, 15, 20, 25 mol%)，通过它们的密度、摩尔体积、紫外-可见光吸收、红外吸收和拉曼光谱方法制备和研究。讨论了玻璃中 P2O5 和 Na2O 的 x mol% 的密度和摩尔体积特性。还介绍和讨论了 P2O5、B2O3 和 Na2O 在光能隙 (Eopt) 中的影响。在拉曼分析中，P2O5 的增加导致 BO 3 单元明显转化为 BO 4 单元，其中四个非桥接氧键合到所有光谱中的磷酸基团（POB 键、焦磷酸和正磷酸）。随着 Na2O 的增加，偏磷酸盐网络被广泛解聚，导致 Q1 转换为 Q° 结构单元。在红外吸收分析中，以 B2O3 为代价添加 P2O5 导致 BO 键减少，PO 2 - 基团中的 P - O - 和 P = O 键增强。Na2O 的增加以 P2O5 为代价，表明 BO 4 四面体/BO 3 三方晶系倾向于产生二硼酸盐/焦硼酸盐基团以将过量的 Na 阳离子容纳到 BO 网络中。