Graphene oxide as solid-state electron mediator enhanced photocatalytic activities of GO-Ag₃PO₄/Bi₂O₃Z-scheme photocatalyst efficiently by visible-light driven

The photocatalytic technology provides a simple and effective strategy for the ever-increasing environmental and energy problem. In this work, we put forward a practical method to facilitate effectively the separation of photogenerated electrons and holes by addition of graphene oxide in Ag₃PO₄and Bi₂O₃nanocrystals semiconductor composite. Compared with GO-single component, the three-component GO-Ag₃PO₄/Bi₂O₃composites with the optimum Ag₃PO₄/Bi₂O₃ratio (6:4) and content of GO (6 wt-%) presented a further improvement on the photodegradation of tetracycline by visible light irradiation driven. GO served as a medium is used to effectively transfer of the photogenerated electrons from the conduction band Bi₂O₃of to the valence band of Ag₃PO₄, the Z-Scheme photocatalytic degradation mechanism was proposed. Our work provides an effective method for development of pragmatic photocatalyst in present environmental pollution, energy problems and other related fields.