Table 3 The comparison of the MB and TB dyes removal efficiency results using chitosan, ZnO NPs, chitosan–ZnO NPs, and chitosan–ZnO/PVP.
Material | Azo dye | Time (min) | Dye removal (%) | Reference |
|---|---|---|---|---|
Chitosan | Methylene blue | 60 | 93.2 | |
Chitosan | Methylene blue | 60 | 84.9 | |
Chitosan | Methyl red | 60 | 90.9 | |
ZnO NPs | Methylene blue | 120 | 78 | |
ZnO NPs | Methylene blue | 90 | 87.5 | |
ZnO NPs | Methylene blue | 120 | 97 | |
ZnO NPs | Methylene blue | 120 | 97.4 | This study |
Toluidine blue | 96.8 | |||
Chitosan–ZnO NPs | Methylene Blue | 120 | 99.6 | This study |
Toluidine blue | 99.46 | |||
Chitosan–ZnO/PVP | Methylene blue | 120 | 100 | This study |
Toluidine blue | 100 |
