Fenton-driven Photothermal Enhanced Degradation of Methylene Blue by Using Cu2O@SnO2@PDA Cubic Heterostructured Catalyst

In order to enhance the photostability of Cuprous oxide and improve the photocatalytic activity, this study was the first to prepare polydopamine (PDA) coated Cu2O@SnO2 Fenton heterostructured catalyst (HCs) for pho-tothermal synergistic enhanced pollutant dye degradation. HCs reduced the Cu2O electron-hole pair filling group rate by Cu/Sn heterostructures, and the PDA shell layer protection greatly improved the stability of Cu2O. The developed Cu2O@SnO2@PDA-HCs could generate heat rapidly under near infrared (NIR) laser irradiation, which greatly improved the catalytic efficiency of the catalyst by a typical photothermal enhanced Fenton-driven degradation process. All the results indicate that Cu2O@SnO2@PDA-HCs have great potential applications in dye wastewater treatment.