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Calculated Gibbs free energy for the binding of chromium(III) to the metal oxide nanomaterials under light(*) and dark (**) conditions.
| Material | ΔG* (kJ/mol) | ΔG**(kJ/mol) |
|---|---|---|
| Fe3O4 (323) | −17.16 | −10.19 |
| Fe3O4 (298) | −15.62 | −9.72 |
| Fe3O4 (277) | −14.79 | −8.63 |
| MnFe2O4 (323) | −12.18 | −11.25 |
| MnFe2O4 (298) | −11.86 | −10.489 |
| MnFe2O4 (277) | −11.40 | −9.55 |
