Table 2 Fitting parameters obtained from the linear transformation of the data for Langmuir, Freundlich, and Dubinin–Radushkevich adsorption models
From: Adsorption of copper (II) on mesoporous silica: the effect of nano-scale confinement
Material | Langmuir fit | Freundlich fit | Dubinin–Radushkevich fit | ||||||
|---|---|---|---|---|---|---|---|---|---|
Substrate | KL, L/µmol | qm−L, µmol/m2 | r2 | n | KF (µmol/m2) | r2 | KD–R, mol2/kJ2 | qm−DR µmol/m2 | r2 |
SBA-15-8 | 2.0 ± 0.4 | 0.057 ± 0.008 | 0.996 | 1.23 ± 0.03 | 0.060 ± 0.002 | 0.998 | 3.4 × 10−8 ± 8 × 10−9 | 0.0251 ± 0.001 | 0.962 |
SBA-15-6 | 2.7 ± 0.6 | 0.05 ± 0.01 | 0.996 | 1.36 ± 0.08 | 0.053 ± 0.004 | 0.990 | 3.0 × 10−8 ± 8 × 10−9 | 0.024 ± 0.002 | 0.984 |
SBA-15-4 | 3.6 ± 0.6 | 0.10 ± 0.01 | 0.994 | 1.27 ± 0.06 | 0.17 ± 0.01 | 0.992 | 2.9 × 10−8 ± 8 × 10−9 | 0.0622 ± 0.002 | 0.982 |