Step-scheme GdFeO3/g-C3N4 heterostructures with outstanding photocatalytic activity

The step-scheme GdFeO 3 /g-C 3 N 4 photocatalysts without any mediators were obtained using an ultrasonic synthetic approach. The microstructures, elemental composition and morphologies, as well as optical, electrochemical and catalytic properties, were thoroughly analyzed. The GdFeO 3 /g-C 3 N 4 -3:7 composite exhibited an excellent enhanced light-harvesting ability and a low charge recombination, resulting into an outstanding visible-light-driven activity, 7.7 and 2.3 times higher than that of pristine g-C 3 N 4 and GdFeO 3 , respectively. A mechanism responsible for the enhancement of the photocatalytic property was proposed. The stability and reusability of the GdFeO 3 /g-C 3 N 4 composites make them promising materials for practical applications related to the removal of organic pollutants from wastewater.