A study on the preparation and performance of a graphene-supported, Ce ion-doped, high-efficiency, magnetic TiO₂ photocatalyst

Abstract

The preparation of a magnetic core-shell Z-scheme heterojunction Fe3O4@SiO2@TiO2-Ce/rGO composite material by sol–gel and hydrothermal methods is described. The catalytic activity of the composite photocatalyst doped with metal Ce and loaded with graphene is significantly improved. Under standard experimental conditions (pH = 7, [methylene blue] = 10 mg L−1, magnetic composite photocatalyst concentration = 0.1 g 50 mL−1), the Fe3O4@SiO2@TiO2-Ce/rGO composite photocatalyst lead to a maximum degradation of methylene blue of 98.2% in 120 min.