Synthesis and visible light photocatalytic property of polyhedron-shaped AgNbO3

Abstract

Polyhedron-shaped AgNbO₃ photocatalysts were synthesized by solvothermal and liquid–solid methods. Their photocatalytic properties were evaluated from the photocatalytic O₂ evolution under visible light irradiation. The polyhedron-shaped AgNbO₃ was induced to grow by shaped silver particles followed by the free-growth model. The photocatalytic results indicate that the polyhedron-shaped morphology is favourable for the photocatalytic O₂ evolution under visible light irradiation in comparison with the spherical one. Furthermore, the Cu doping on the surface would enhance the visible light photocatalytic activity significantly.