Z-scheme Ag3PO4/POM/GO heterojunction with enhanced photocatalytic performance for degradation and water splitting

Abstract

To develop solar light-driven photocatalysts with high activity and structural stability, Ag₃PO₄/POM/GO heterojunction has been successfully prepared by a facile method at room temperature. Ag₃PO₄/POM/GO shows remarkably enhanced activity and stability for photocatalytic degradation and H₂ production from water-splitting under simulated solar light. The degradation rate of Ag₃PO₄/POM/GO is 1.8 times and 1.2 times those of Ag₃PO₄ and Ag₃PO₄/POMs, respectively. H₂ production using Ag₃PO₄/POM/GO is 2.0 times that of Ag₃PO₄/GO. The enhanced photocatalytic performance of Ag₃PO₄/POM/GO is attributed to the increased surface area, electronegativity and structure stability. The Z-scheme system of Ag₃PO₄/POM/GO effectively promotes charge separation, resulting in enhanced photocatalytic performance under simulated solar light.