Table 1 Summary of the nitrogen content and bonding state of the IPNCN-2-X composite catalysts
Sample | C (at. %) | N (at. %) | O (at. %) | Fe (at. %) | XPS (N content %) | Pyridinic-N (at. %) | ||
|---|---|---|---|---|---|---|---|---|
Pyridinic-N | Pyrrolic-N | Graphitic-N | ||||||
IPNCN-2–750 | 77.5 | 11.1 | 10.0 | 1.4 | 34.3 | 29.4 | 26.9 | 3.8 |
IPNCN-2–800 | 79.0 | 9.21 | 10.8 | 1.0 | 33.7 | 27.9 | 25.2 | 3.1 |
IPNCN-2–850 | 79.5 | 8.3 | 10.9 | 1.2 | 29.3 | 27.8 | 27.7 | 2.4 |
IPNCN-2–900 | 84.5 | 3.2 | 11.4 | 0.9 | 30.1 | 30.5 | 28.1 | 1.0 |