Table 2.
The recent noble metal catalyst for HOR in acid medium.
| Catalyst | Synthesis Method | Size Particle (nm) | io (mAcm−2) | Specific Activity@ 0.1 V (A/gIr) | Ref. |
|---|---|---|---|---|---|
| Pd/C | Pulse microwave assisted polyol | 4.3 ± 0.3 | 0.35 | N.R. | [281] |
| Pd3Ir/C | 4.5 ± 0.3 | 0.7 | N.R. | ||
| PdIr/C | 4.4 ± 0.3 | 1.6 | N.R. | ||
| PdIr3/C | 5.3 ± 0.3 | 1 | N.R. | ||
| Ir/C | 5.7 ± 0.3 | 0.2 | N.R. | ||
| Pd/C | Thermal synthesis (300°C, Ar, 1h) | 4.5 | N.R. | N.R. | [284] |
| PdP2 | 5 | N.R. | N.R. | ||
| Pd5P2 | 5.5 | N.R. | N.R. | ||
| IrFe/C | Solvent vaporization + hydrogen reduction method | 3.8 ± 0.2 | N.R. | 146.9 | [285] |
| IrCo/C | 2.6 ± 0.2 | N.R. | 133 | ||
| IrNi/C | 3.4 ± 0.2 | N.R. | 152 | ||
| Pt | N.R. | N.R. | 16 |
N.R. = not reported.