| Catalysts | Reaction Rate Constants of metal-doped CdS Catalysts | ||
| CA0 (ppm) | CA (ppm) | k*10−3 (min−1) | |
| Ni-CdS | 5.30 | 1.44 | 5.1 |
| Co-CdS | 5.62 | 0.75 | 8.6 |
| Ce-CdS | 5.35 | 1.26 | 3.0 |
| Sb-CdS | 5.30 | 1.56 | 1.9 |