Skip to main content

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
\