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Parameters of isothermal adsorption models for MG adsorption onto the GO–ZnO nanohybrid.
| Isotherm | Plot | Parameters | Values |
|---|---|---|---|
Langmuir
|
Ce/qe vs. Ce | Qm (mg g−1) | 131.91 |
| KL (L mg−1) | 3.906 | ||
| R2 | 0.992 | ||
| RL=1/(1+(KL×C0)) | 0.005–0.049 | ||
Freundlich
|
ln qe vs. ln Ce | 1/n | 0.314 |
| KF (L mg−1) | 7.055 | ||
| R2 | 0.976 | ||
Temkin
|
qe vs. ln Ce | B1 | 16.27 |
| KT (L mg−1) | 1.00 | ||
| R2 | 0.878 | ||
Dubinin-Radushkevich
|
ln qe vs. ε2 | Qs (mg g−1) | 84.62 |
| β | − 8.0E−09 | ||
| E (kJ mol−1) | 7.882 | ||
| R2 | 0.772 |
