Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (11): 1794-1803.DOI: 10.1016/S1872-2067(17)62905-X

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Recent progress in Ag3PO4-based all-solid-state Z-scheme photocatalytic systems

Ming Gea,b, Zhenlu Lia   

  1. a College of Chemical Engineering, North China University of Science and Technology, Tangshan 063210, Hebei, China;
    b Hebei Key Laboratory of Photocatalytic and Electrocatalytic Materials for Environment, Tangshan 063210, Hebei, China
  • Received:2017-06-30 Revised:2017-08-18 Online:2017-11-18 Published:2017-11-24
  • Contact: 10.1016/S1872-2067(17)62905-X
  • Supported by:

    This work was supported by the Youth Foundation of Hebei Education Department (QN2017115), and the National Natural Science Foundation of China (51504079).

Abstract:

Heterogeneous semiconductor photocatalysis is a promising green technology solution to energy and environmental problems. Traditional photocatalyst TiO2, with a wide band gap of 3.2 eV, can only be excited by UV light and utilizes less than 4% of solar energy. Silver phosphate (Ag3PO4) is among the most active visible-light-driven photocatalysts reported. Unfortunately, unwanted pho-tocorrosion is the main obstacle to the practical application of Ag3PO4. Much effort has been made in recent years to address this issue and further enhance the photocatalytic performance of Ag3PO4. The construction of Z-scheme photocatalytic systems that mimic natural photosynthesis is a prom-ising strategy to improve the photocatalytic activity and stability of Ag3PO4. This brief review con-cisely summarizes and highlights recent research progress in Ag3PO4-based all-solid-state Z-scheme photocatalytic systems with or without a solid-state electron mediator, focusing on their construc-tion, application, and reaction mechanism. Furthermore, the challenges and future prospects of Ag3PO4-based Z-scheme photocatalytic systems are discussed.

Key words: Silver phosphate, Photocatalysis, Z-scheme system, Application, Mechanism