Contents and synthesis conditions of Cu–ZnO NPs.
| S. no. | Nanoparticles | wt% ratio | MB dye degradation (%) (after 105 min) | |
|---|---|---|---|---|
| Cu(NO3)2·3H2O | Zn(NO3)2·6H2O | |||
| 1 | ZnO | 0 | 100 | 53 |
| 2 | 1% Cu–ZnO | 1 | 99 | 55 |
| 3 | 2% Cu–ZnO | 2 | 98 | 63 |
| 4 | 3% Cu–ZnO | 3 | 97 | 76 |
| 5 | 4% Cu–ZnO | 4 | 96 | 82 |
| 6 | 5% Cu–ZnO | 5 | 95 | 61 |