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Kinetic parameters obtained from the fitting of the experimental data with intraparticle diffusion model.
| Dye | Sample | Breakpoint (min1/2) | kid (mg g−1 min−1/2) | C (mg g−1) | R2 |
|---|---|---|---|---|---|
| MB | Fe3O4-SBA15 | 4.8 | 31.36 | 2.59 | 0.9998 |
| 14.7 | 6.06 | 124.70 | 0.9936 | ||
| Fe3O4-SBA15-COOH-0.05 | 6.2 | 27.99 | 21.50 | 0.9952 | |
| 13.5 | 5.31 | 162.12 | 0.9659 | ||
| Fe3O4-SBA15-COOH-0.1 | 4.9 | 30.66 | 26.54 | 0.9954 | |
| 12.4 | 8.27 | 137.28 | 0.9758 | ||
| MG | Fe3O4-SBA15 | - | 2.21 | −4.88 | 0.9865 |
| Fe3O4-SBA15-COOH-0.05 | - | 2.45 | −3.21 | 0.9809 | |
| Fe3O4-SBA15-COOH-0.1 | - | 8.59 | −8.14 | 0.9550 |
