Table 1.
The fitting results of the high resolution XPS spectra of C, O, N, and S for EBC-K and EBC-Na.
| Bio-Carbons | C Distribution (%, atm) | O Distribution (%, atm) | ||||||
|---|---|---|---|---|---|---|---|---|
| C=C /C-C |
C-O | O-C=O /C=O |
COOH | C=O | C-OH | C-O-C | ||
| EBC-K | 75.29 | 19.75 | 0.79 | 4.17 | 22.37 | 72.39 | 5.24 | |
| EBC-Na | 76.95 | 18.34 | 3.42 | 1.29 | 13.13 | 59.39 | 27.48 | |
| N Distribution (%, atm) | S Distribution (%, atm) | |||||||
| Pyridinic | Pyrrolic | Graphitic | Oxidized | C-S | Oxidized Sulfur | |||
| S 2p3/2 | S 2p1/2 | S 2p3/2 | S 2p1/2 | |||||
| EBC-K | 17.35 | 74.59 | 4.78 | 3.28 | 42.21 | 19.27 | 27.03 | 11.49 |
| EBC-Na | 20.76 | 68.64 | 6.36 | 4.24 | 39.32 | 23.28 | 11.32 | 26.08 |