Abstract The modified sodium borosilicate glass was synthesized by incorporating CaO, TiO2 and Al2O3 to the primary glass forming constituents (SiO2, B2O3 and Na2O) and on melting the mixture at 1373–1473K/3h by melt quench method. Uranium loaded analogues were synthesized by adding varying amounts of UO3 (2,4,6 and 8 mol %) to the borosilicate glass forming reagents then on melting at 1373–1473K. The U-loaded matrices were characterized by XRD to ensure the formation of glass matrices. Solubility of uranium in sodium borosilicate glass has been investigated. Further, the glasses were characterized by X-ray photoelectron spectroscopy (XPS) to unravel the oxidation states of uranium in the modified glass composition. X-ray absorption spectroscopy (EXAFS) revealed the chemical environment of uranium in the glass matrix indicating the coordination number of U in glass.

中文翻译：

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利用X射线光电子能谱和X射线吸收光谱研究改性硼硅酸钠玻璃中铀的化学状态

摘要 通过将 CaO、TiO2 和 Al2O3 加入到主要的玻璃形成成分（SiO2、B2O3 和 Na2O）中，并在 1373–1473K/3h 下通过熔体骤冷法熔化混合物，合成了改性硼硅酸钠玻璃。通过将不同量的 UO3（2、4、6 和 8 mol%）添加到硼硅酸盐玻璃形成试剂中，然后在 1373-1473K 熔化，合成了负载铀的类似物。加载 U 的基质通过 XRD 进行表征，以确保玻璃基质的形成。已经研究了铀在硼硅酸钠玻璃中的溶解度。此外，通过 X 射线光电子能谱 (XPS) 对玻璃进行表征，以揭示改性玻璃组合物中铀的氧化态。