XPS results of samples.
| Sample | Fe 2p | O 1s | Oads/Olat | Fe3+/Fe2+ | |||
|---|---|---|---|---|---|---|---|
| Fe | E b/eV | Area | E b a/eV | Area | |||
| M-LF-600 | 2p1/2 | 722.531 | 9415.290 | 530.694(Oβ) | 13165.730 | 2.78 | 0.99 |
| 2p3/2 | 709.934 | 9036.730 | 529.318(Oads) | 32786.670 | |||
| 2p3/2 | 708.461 | 9107.620 | 527.473(Olat) | 15010.930 | |||
| 2p1/2 | 722.683 | 4180.640 | 531.072(Oβ) | 8198.380 | |||
| S-LF-700 | 2p3/2 | 710.145 | 5510.360 | 529.935(Oads) | 34825.180 | 2.56 | 0.96 |
| 2p3/2 | 708.702 | 5737.900 | 527.860(Olat) | 12918.330 | |||
| 2p1/2 | 722.723 | 8894.070 | 531.262(Oβ) | 2862.070 | |||
| C-LF-700 | 2p3/2 | 710.477 | 7702.350 | 529.988(Oads) | 45175.380 | 2.45 | 0.75 |
| 2p3/2 | 708.736 | 10211.490 | 528.014(Olat) | 16441.550 | |||
a
Oβ: hydration of oxygen; Oads: adsorbed oxygen; Olat: surface lattice oxygen.