Direct Z-scheme GdFeO3/g-C3N4 heterostructures with outstanding photocatalytic activity

Abstract

The direct Z-scheme GdFeO3/g-C3N4 photocatalysts used without any mediators were obtained using an ultrasonic synthesis approach. The composites’ structures, elemental composition and morphologies, as well as optical, electrochemical and catalytic properties, were thoroughly analyzed. GdFeO3/g-C3N4-3:7 composite exhibited an excellent enhanced light-harvesting ability and low recombination rate, which manifested into an outstanding visible-light driven activity, 7.7 and 2.3 times more than of stand-alone g-C3N4 and GdFeO3, respectively. A mechanism responsible for the photocatalytic property enhancement was proposed. The stability and reusability of the GdFeO3/g-C3N4 composites make them excellent materials for practical applications related to the removal of organic pollutants from the wastewater.

New Progresses in Efficient, Selective, and Environmentally Friendly Recovery of Valuable Metal from e‐Waste and Industrial Catalysts

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