Table 3.
Corrected BE ± 0.1 eV and corresponding assignments.
| AuNPs/ rGO |
AuNPs/ GO |
AuNPs/ G |
rGO | GO | G | Assignments [51,52] | |
|---|---|---|---|---|---|---|---|
| C 1s | 284.4 | 284.4 | 284.4 | 284.4 | 284.4 (1) | 284.4 | C-C and C-H sp2 |
| 285.5 | 285.1 | 285.7 | 285.4 | 285.0 | 285.2 | C-C and C-H sp3 | |
| 286.3 | 287.0 | 286.7 | 286.4 | 287.3 | 286.2 | C-O or epoxide | |
| 287.6 | 288.3 | 287.9 | 287.7 | 287.4 | C=O | ||
| 288.8 | 289.1 | 288.8 | 289.2 | 288.8 | XO-C=O (X=H or C) | ||
| 290.2 | 289.7 | 290.3 | 289.9 | 290.1 | π-π* | ||
| 291.3 | 291.6 | 291.3 | 292.0 | 291.3 | |||
| 293.3 | 292.6 | 294.1 | 293.8 | ||||
| 295.6 | 294.9 | ||||||
| O 1s | 531.5 | 531.6 | 530.7 | 531.3 | O in electropositive vicinity | ||
| 532.7 | 532.9 | 532.3 | 532.9 | 532.9 | 532.3 | O bonded to C | |
| Au 4f7/2 | 84.1 | 84.6 | 84.1 | Au0; in “AuNPs/GO”: Au+? (see text) |
|||
| Au 4f5/2 | 87.8 | 88.3 | 87.8 | ||||
| S 2p3/2 | 168.6 | 169.0 | SO42− | ||||
| S 2p1/2 | 169.8 | 170.0 | |||||
| Si 2p3/2 | 101.7 | 101.7 | 101.6 | 102.0 | silicone | ||
| Si 2p1/2 | 102.3 | 102.4 | 102.2 | 102.6 |
(1) see text.