| 用稀土多元渗法制备钾稀土钨青铜KxLayWO3的XPS研究 |
| XPS Study on Potassium Tungsten Bronze KxLayWO3 Prepared by Rare Earth Co-Permeation |
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| 摘要: |
| 关键词: 稀土多元渗 钾稀土钨青铜(KxLayWO3) X光电子能谱(XPS) |
| 基金项目: |
| Abstract: Potassium tungsten bronze KxLayWO3 (x>0.5 and y<0.01) was synthesized by rare earth co-permeation method using α-K7[SiMg3(OH2)3W9O37] as the precursor. Binding energies of La, W, O and C were determined by XPS. From the XPS data, a peak at 34.21 eV indicates that some
W6+ turned into W5+ by rare earth co-permeation. The binding energies La3d were the same in the surface and inner of the composite, showing that rare earth element La could diffuse into the body of the composite and the compound of
KxLayWO3 was formed at the same time. The binding energies of O1s in
KxLayWO3 surface were 531.4 eV and 532.0 eV, respectively, while peak at 531.4 eV disappeared through etching process. The result implies that the binding energy of 531.4 eV was due to the adsorbent O. In addition, the binding energies of C1s in the surface were 283.5 eV, 285.0 eV and 286.7 eV respectively, while the inner had only one peak at 285.0 eV due to standard C1s. This proves that there was no C in the core. |
| Keywords: rare earths co-permeation potassium tungsten bronze X-ray photon electron spectroscopy(XPS) |
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| 李昕,郭元茹,高玉枝,李中华,管彩云.用稀土多元渗法制备钾稀土钨青铜KxLayWO3的XPS研究[J].无机化学学报,2006,22(1):171-174. |
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