The Mg-excited spectra are more surface sensitive than those excited by Al K alpha and the differences in the spectral functions are exploited to obtain information on the variation of the 4f configuration in the bulk and at the surface as seen through the multiplet structure in Ce 3d XPS. ...
因此,1CeFe对C2=-C4=表现出最高的选择性。 Fig. 6.XPS spectra of (a) Fe 2p, (b) O 1s, and(c) Ce 3d and (d) EPR of the spent catalysts. 图6b和6c分别为反应后催化剂的O 1s和Ce 3d图谱。如图6b 所示,反应后...
10%Ce─ZnO的电化学阻抗谱(EIS)在黑暗和光照条件下都比ZnO表现出更小的阻抗(图3d)。这些结果表明,在ZnO中引入Ce可以更有效地分离和转移载流子。 Fig.3. (a, b) XPS spectra of a) Zn 2p, and b) Ce 3d, on ZnO, 5%-Ce─...
Figure 7d compares the Ce 3d XPS spectra before and after the 10V-3Ce/Al reaction. Note that Olatt exists in CeO2 [28]. As shown in Table 4, the Ce4+ content decreased from 63.27% before the reaction to 54.96% after the reaction; concomitantly, the Ce3+ content increased from 36.73...
fitting of Ce 3d and O 1s core-level spectra were used to determine the types of valence states and their proportions on the catalysts’ surface. The study revealed valence state modifications in cerium and changes in the amount of lattice oxygen ...
Ce 3dXPS spectrum is single—peak for pure cerium metal,but during oxidation,the 3d spectra show multi-split.That’s to say,there are two peaks in each region,3d3/2 and 3d5/2.VVhen there are some Ce02 on the surface,the spectra are more complex.Study of X—ray diffraction(XRD)of ...
The well-resolved components of Ce 3d5/2 and Ce 3d3/2 spin-orbit components, due to various final states (4f0, 4f1, 4f2 configurations), were determined on 3d XPS spectra from commercial powders (CeO2, CePO4).关键词: XPS Ce 3d cerium oxide mixed cerium‐titanium oxide ...
Ce3+激活锂-6闪烁玻璃XPS能谱
品表面生成Ce02后,ce3d谱更为复杂。Ce—La合金的x-射线衍射分析(XRD) 结果表明,合金体系中的合金相为Y相,即是说在金属Ce中掺入少量的金属La 后,并不发生相变。 通过金属Ce与金属Pu的性质对比发现:两种金属之间存在差异,但也具有 一定的相似性。金属Ce与金属Pu的清洁表面芯能级XPS谱结构存在明显差异; ...
SpectroscopyandSpectra1Analysis Vo1.3O,No.1,pp270—273 January,2010 焙烧条件对Ce离子价态影响的XPS研究 梅 燕,闫建平,聂祚仁 北京工业大学材料科学与工程学院,北京 100124 摘 要 在均相沉淀法制备含铈化合物的过程中,利用XRD和IR尤其是XPS研究了含ce化合物在不同 ...