Research Article

[Retracted] Simple Preparation of the CuO•Fe3O4/Silica Composite from Rice Husk for Enhancing Fenton-Like Catalytic Degradation of Tartrazine in a Wide pH Range

Figure 8

(a) Oxidative degradation of tartrazine at the different H2O2 concentrations and (b) fitting plots. The reaction conditions: dosage catalyst of 0.5 g/L, tartrazine concentration of 50 mg/L, and pH =5.
(a)
(b)