Preparation of α-Fe₂O₃/CuO/rGO Heterogeneous Fenton Catalyst and its Degradation of Phenol

The graphene oxide(GO)was prepared with the modified Hummers method. Then it was reduced with FeSO₄·7H₂O through high temperature reflux. The reduction product was impregnated with Cu(NO₃)₂ and calcined to obtain the heterogeneous Fenton catalytic material (α-Fe₂O₃/CuO/rGO). The materials were characterized with XRD and SEM. Phenol was used as the target pollutant to investigate the characteristics and efficiency of α-Fe₂O₃/CuO/rGO for the phenol degradation. The experimental results showed that at the optimum state, pH=5.8, 40 mmol/L H₂O₂, 1.0 g/L catalyst and 0.1 g/L Phenol, the degradation percentage of Phenol was 100% within 90 min; the TOC removal efficiency reached approximately 70% within 180 min. Therefore, α-Fe₂O₃/CuO/rGO showed high efficiency of phenol degradation and is a promising Fenton catalyst.