Peak (eV) | Assignment | Surface group | Reference |
O1s |
|
|
|
532.9 - 533.2 eV | Ester/amide/carboxylic anhydrides and oxygen atoms in hydroxyls or ethers | C-O | [13] [16] [17] [18] [19] |
534.2 eV | Carboxylic acid | C-O | [13] [16] [17] [18] [19] |
C1s |
|
|
|
284.2 - 284.9 eV | Graphite | C | [9] [13] [14] [15] |
285.4 - 286.3 eV | Ether/phenol/alcohol | C-O- | [9] [13] [14] [15] |
287.2 - 287.9 eV | Carbonyl/quinone | C = O | [9] [13] [14] [15] |
288.7 - 289.3 eV | Carboxyl/ester | COO | [9] [13] [14] [15] |
290.2 - 290.8 eV | Carbonate, occluded CO, π-electrons in aromatic ring | C = O/C = C | [9] [13] [14] [15] |