Preparation of Mg and Ce nanomaterials and their degradation of dye wastewater

In this paper, we synthesized nano-scale Mg(OH), Ce(OH), Mg/Ce(OH), and MgCeO by simple membrane electrolysis. Under visible-light irradiation, the photocatalytic effect was measured by photocatalytic HO degradation of methylene blue (MB). The properties of the prepared materials were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), N adsorption–desorption isotherms (BET), UV–Visible spectrophotometry (UV–Vis), Mott–Schottky and ESR methods were used to characterize. The results show that, unlike the expected photocatalytic performance of the composite product, pure Mg(OH) can achieve a photodegradation rate of 85.93% of MB (10 mg/L of 100 mL) under 4 h of visible light. However, the photocatalytic activity of Mg(OH)/Ce(OH) and MgO/CeO was even worse than that of HO alone, so we further explored the reasons for the poor photocatalytic effect of the Mg/Ce complex.