Comparison of the equilibrium adsorption capacity of synthesized ferrite-based nanoparticles for the adsorption of heavy elements.
| No. | Nanoparticles used | Synthesis method | Equilibrium adsorption capacity of the mentioned element (mg g−1) | Ref |
|---|---|---|---|---|
| 1 | γ-Fe2O3 | Using CTAB and co-precipitation method | Pb2+(1.5% CTAB): 20.7 | This work |
| Pb2+(3% CTAB): 25 | ||||
| Pb2+(3% CTAB): 15.6 | ||||
| 2 | Fe3O4 nanospheres | One-step solvothermal method | Pb2+: between 6.64 and 8.90 | 65 |
| 3 | ϒ-Fe2O3 | Sol – Gel | Cr4+: 19.2 | 66 |
| 4 | ϒ-Fe2O3 | Sol – Gel | Cu2+: 26.8 | 67 |
| 5 | Hematite | Co-precipitation | Cu2+: 84.46 | 68 |
| 6 | Core (Fe3O4)-Shell (Al–Mn) | Hydrothermal and chemical self-assembly process | Cr4+: 150 | 69 |
| 7 | Fe3O4@APS@AA-co-CA MNPs | Co-precipitation/free-radical polymerization | Zn2+: 43.4 – Cd2+: 29.6 – Pb2: 166.1 | 70 |
| 8 | γ-Fe2O3 | Wet chemical | Zn2+: 4.49 – Cd2+: 1.75 – Pb2: 10.55 | 71 |
| 9 | γ-Fe2O3 | Co-precipitation | Pb2: 25 | 72 |
| 10 | γ-Fe2O3 | Hydrothermal | Arsenic ions: 73.2 | 73 |