Table 3 XPS survey of prepared catalysts.
Elements | Indexed elemental state | Binding Energy (CoF1) | Percentage (%) | Binding Energy (CoF4) | Percentage (%) |
|---|---|---|---|---|---|
Co2p3/2 | Co2+(Oh) | 779.46 | 58.44 | 779.52 | 41.35 |
Co2+(Th) | 781.34 | 41.55 | 781.93 | 58.64 | |
Fe2p3/2 | Fe3+(Oh) | 710.08 | 49.99 | 710.10 | 34.67 |
Fe3+(Th) | 712.51 | 50.01 | 712.02 | 65.32 | |
Oxygen | Oxide | 529.50 | 48.15 | 529.59 | 63.38 |
Oxide defects | 530.44 | 40.95 | 531.26 | 20.04 | |
water | 533.86 | 10.88 | 533.11 | 16.56 | |
Carbon | C-C/C-H | 284.44 | 75.06 | 284.51 | 72.77 |
C-O | 286.07 | 14.05 | 286.07 | 9.34 | |
O-C = O | 287.99 | 10.87 | 287.84 | 17.87 | |
Zn2p3/2 | Zn2+ | 1020.34 | 61.80 | 1020.82 | 94.31 |
Zn3+ | 1022.35 | 38.19 | 1022.34 | 5.68 |
