Table 4.
Adsorption performance of functionalized SBA-15 materials for heavy metal ions.
| Functionalized Material | Heavy Metal Ion(s) | Maximum Adsorption Capacity (mg/g) | Optimal pH | Isotherm Model | Ref. |
|---|---|---|---|---|---|
| Magnetic SBA-15 nanosorbent | Cd(II) | 140 | 5 | - | [35] |
| Crown-ether-modified SBA-15 | Zn(II) | - | 5 | Langmuir | [79] |
| Amine-functionalized SBA-15 | Cu(II), Cr(III), Co(II), Ni(II), Cd(II), Mn(II), Na(I) | - | 5–6 | - | [125] |
| Urea-functionalized SBA-15 | Cr(VI)/Cd(II)/Pb(II) | 26.83/30.53/43.85 | 2.5/5/4 | Langmuir | [126] |
| Imidazole-derivatized SBA-15 | Cr(VI) | 113 | 4–5.5 | - | [127] |
| N-hydroxysuccini mide-functionalized SBA-15 | Cu(II) | 138.8 | 5.5 | Langmuir | [128] |