Table 2 Surface elemental composition and XPS binding energies of FT-1, FT-2, and FT-3
Chemical composition (%); in parentheses, binding energy (eV) | Atomic ratio | ||||||
|---|---|---|---|---|---|---|---|
Samples | Ti 2 p | Fe 2 p | O 1 s | N 1 s | Si 2 p | Ti/Fe | O/FeTi |
FT-1 | 2.87 (457.7) | 1.38 (709.2) | 29.08 (529.4) | 3.96 (400.3) | 3.80 (101.5) | 2.08 | 6.84 |
FT-2 | 4.72 (457.8) | 1.25 (709.3) | 27.13 (529.5) | 4.10 (401.2) | 2.60 (101.0) | 3.78 | 4.54 |
FT-3 | 5.75 (458.3) | 1.02 (710.0) | 33.53 (530.0) | 4.38 (400.7) | 5.48 (101.4) | 5.63 | 4.95 |