- Elements
Vanadium
Analysis of Vanadium by XPS is typically performed on the V 2p region, which overlaps very slightly with the O 1s region, slightly complicating analysis (Figure 1), though provided an extended region is acquired, collecting both V 2p peaks and the O 1s region then background application and peak fitting may be fairly trivial. The doublet separation varies with chemical state, and is around 7.5 eV
![](https://usercontent.one/wp/www.harwellxps.guru/wp-content/uploads/2022/10/V2p-500x235.jpg?media=1666692868)
As with most first row TMs, the 2p1/2 peak exhibits a larger FWHM than that of the 2p3/2 due to Coster-Kronig processes.
Some common binding energies may be found in table 1.
Species | Binding energy / eV | Charge Ref | Ref |
V metal | 512.7 | Cu 2p / 932.3 eV | 2 |
V2O3 | 515.15 | O 1s / 530 eV | 3 |
VO2 | 515.65 | O 1s / 530 eV | 3 |
V2O5 | 517 | O 1s / 529.8 eV | 3 |
V6O13 | 516.5 | O 1s / 530 eV | 3 |
V3O5 | 515.5 | C 1s / 285 eV | 4 |
V4O7 | 516 | C 1s / 285 eV | 4 |
- References
- Spectra recorded by HarwellXPS
- Kasperkiewicz, J., et al. (1983). “XPS studies of vanadium and vanadium oxides.” Journal of Electron Spectroscopy and Related Phenomena 32(2): 123-132. Read it online here.
- Mendialdua, J., et al. (1995). “XPS studies of V2O5, V6O13, VO2 and V2O3.” Journal of Electron Spectroscopy and Related Phenomena 71(3): 249-261. Read it online here.
- Demeter, M., et al. (2000). “Mixed-valence vanadium oxides studied by XPS.” Surface science 454: 41-44. Read it online here.
Created: May 24, 2024