The halide perovskite material has attracted vast attention as a versatile semiconductor in the past decade. With the unique advantages in physical and chemical properties, they have also shown great potential in photocatalytic applications. This review aims at the specific design principles triggered by the unique properties when employing halide-perovskite-based photocatalytic systems from the following perspectives: (I) Design of photoelectrocatalytic device structures including the n-i-p/p-i-n structure, photoelectrode device encapsulation, and electrolyte engineering. (II) The design of heterogeneous photocatalytic systems toward the hydrogen evolution reaction (HER) and CO₂ reduction reaction, including the light management, surface/interface engineering, stability improvement, product selectivity engineering, and reaction system engineering. (III) The photocatalysts for the environmental application and organic synthesis. Based on the analyses, the review also suggests the prospective research for the future development of halide-perovskite-based photocatalytic systems.

在过去的十年中，卤化物钙钛矿材料作为一种多功能半导体引起了广泛的关注。凭借其独特的物理和化学性能优势，它们在光催化应用中也显示出巨大的潜力。本文从以下角度针对卤化物-钙钛矿基光催化系统的独特性能所引发的具体设计原则进行综述：（一）光电催化器件结构的设计，包括nip/pin结构、光电极器件封装和电解质工程。（二）针对析氢反应（HER）和CO ₂还原反应的多相光催化系统设计，包括光管理、表面/界面工程、稳定性改进、产物选择性工程和反应系统工程。（三）环境应用和有机合成光催化剂。基于分析，该综述还提出了卤化物-钙钛矿基光催化系统未来发展的前瞻性研究。