Table 3. Peak Area Ratios of Different N Species in PAC before and after Activation.
| sample | N atom % | N species
ratio, % |
N-6 atom % | N-5 atom % | N-Q atom % | ||
|---|---|---|---|---|---|---|---|
| N-6 | N-5 | N-Q | |||||
| PAC-750-0.5h | 2.68 | 10.69 | 79.79 | 9.52 | 0.29 | 2.14 | 0.26 |
| PAC-0.2K2CO3-750-0.5 | 1.20 | 20.70 | 68.68 | 10.62 | 0.25 | 0.82 | 0.13 |
| PAC-0.5K2CO3-750-0.5 | 2.22 | 10.68 | 56.83 | 32.49 | 0.24 | 1.26 | 0.72 |
| PAC-1.5K2CO3-750-0.5 | 2.07 | 13.55 | 50.42 | 36.03 | 0.28 | 1.04 | 0.75 |
| PAC-0.2KOH-750-0.5 | 1.95 | 39.76 | 26.63 | 33.61 | 0.78 | 0.52 | 0.66 |
| PAC-0.5KOH-750-0.5 | 1.47 | 21.34 | 39.82 | 38.85 | 0.31 | 0.59 | 0.57 |