Recent advances in metal halide perovskite photocatalysts: Properties, synthesis and applications

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Metal halide perovskites (MHPs) are a special class of photocatalysts that exhibit excellent performance in photocatalysis. This review gives a comprehensive overview of their recent advances. • Metal halide perovskites (MHPs) are a special class of photocatalysts. • Fundamental features and synthesis methods of MHP photocatalysts are introduced. • Recent advances of MHP-based photocatalytic reactions are systematically reviewed. • The challenges and outlook for the MHP photocatalytic systems are proposed. As a class of new emerged semiconductors, MHPs exhibit many excellent photoelectronic properties, which are superior to most conventional semiconductor nanocrystals (NCs). Particularly, MHPs have received extensive attention and brought new opportunities for the development of photocatalysis. Over the past few years, numerous efforts have been made to design and prepare MHP-based materials for a wide range of applications in photocatalysis, ranging from photocatalytic H 2 generation, photocatalytic CO 2 reduction, photocatalytic organic synthesis and pollutant degradation. In this review, recent advances in the development of MHP-based materials are summarized from the standpoint of photocatalysis. A brief outlook of this field has been proposed to point out some important challenges and possible solutions. This review suggests that the new family of MHP photocatalysts provide a new paradigm in efficient artificial photosynthesis.