Peroxidase-Like Activity of Ferrihydrite and Hematite Nanoparticles for the Degradation of Methylene Blue

Figure 5

Curves of MB degradation as a function of (a) reaction time (0.45 mol/L of H₂O₂, 0.5 g/L of NPs, and 10 mg/mL of MB), (b) H₂O₂ concentration (time 180 min, pH 8, 0.5 g/L of NPs, and 10 mg/mL of MB), and (c) concentration of NPs (time 180 min, 0.45 mol/L of H₂O₂, and pH 8, 10 mg/mL of MB).

(a)

(b)

(c)