Abstract

New selenates La₂O₂SeO₄ and Pr₂O₂SeO₄, as well as selenite PbSe⁴⁺O₃ and selenate PbSe⁶⁺O₄, have been studied by X-ray photoelectron spectroscopy (XPS). The elemental and ionic compositions of new selenates containing Se⁶⁺, La³⁺, and Pr³⁺ ions have been confirmed on the basis of XPS parameters of the core and valence electrons. The reduction of Se⁶⁺ ions on the surface of selenite samples to Se⁴⁺ ions under X-ray radiation in the spectrometer chamber has been studied. It has been demonstrated that, unlike the PbSe⁶⁺O₄ selenate, the PbSe⁴⁺O₃ selenite is stable to X-ray radiation. It has been shown that La₂O₂SeO₄ is more stable in air than Pr₂O₂SeO₄.

中文翻译：

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硒酸盐La 2 O 2 SeO 4和Pr 2 O 2 SeO 4的X射线光电子能谱

摘要

新硒酸盐的La ₂ ö ₂的SeO ₄和Pr ₂ ö ₂的SeO ₄，以及硒的PbSe ⁴⁺ ö ₃和硒的PbSe ⁶⁺ Ò ₄，已经研究了通过X射线光电子能谱（XPS）。根据核心和价电子的XPS参数，已经证实了含有Se ⁶⁺，La ³⁺和Pr ³⁺离子的新型硒酸盐的元素和离子组成。亚硒酸盐样品表面上的Se ⁶⁺离子还原为Se ⁴⁺已经研究了在光谱仪室中X射线辐射下的离子。已经证明，与硒酸PbSe ⁶⁺ O ₄不同，PbSe ⁴⁺ O ₃亚硒酸盐对X射线辐射稳定。已经表明，La ₂ O ₂ SeO ₄在空气中比Pr ₂ O ₂ SeO ₄更稳定。