Abstract: | Photocatalysis has been recognized as a potential strategy for energy conversion and environmental remediation. In this study, we present a facile hydrothermal method for the controlled syntheses of Ag5P3O10, Ag4P2O7/Ag3PO4 and Ag3PO4 photocatalysts by using sodium triphosphate (Na5P3O10) as the phosphate source. The phase structure and morphology of the products were investigated by X‐ray powder diffraction (XRD) and scanning electron microscopy (SEM). The photocatalytic activities of the synthesized Ag5P3O10, Ag4P2O7/Ag3PO4 and Ag3PO4 nanostructures were evaluated by the degradation of organic pollutants under simulated sunlight irradiation. The kinetics of the photocatalytic degradation reaction is presented. It is revealed that the photocatalytic activity increases in the order of Ag5P3O10, Ag4P2O7/Ag3PO4 and Ag3PO4, and the Ag3PO4 nanocrystals show the best photocatalytic performance. The photocatalytic mechanism was systematically investigated, and the superoxide radicals (O2•−) and photoinduced holes are considered to contribute mostly to the high photocatalytic activity of Ag3PO4. |