Being one of the renewable sources of energy, solar energy is considered a green and sustainable source and hence it can be utilized to generate carbon-free hydrogen via breaking a water molecule. In recent years, perovskite transition metal oxide-based materials have been investigated extensively as catalyst materials (i.e. photocatalyst/photoelectrode) in energy and the environment since they are low-cost, abundant, and also have good performance. In this comprehensive review, the perovskite transition metal oxides as both; photoanode and photocathode catalyst/electrode materials, for solar-driven photocatalytic (PC) and photoelectrochemical (PEC) water splitting, are discussed in detail. Further, several major milestones and recent developments in this field have also been discussed. At last, an overview of the recent challenges, potential research directions, and the future outlook is presented to guide the design and configuration of highly efficient photocatalyst/photoelectrode used in water splitting.

作为可再生能源之一，太阳能被认为是一种绿色和可持续的能源，因此它可以通过破坏水分子来产生无碳氢。近年来，钙钛矿过渡金属氧化物基材料作为催化剂材料（即光催化剂/光电极）在能源和环境方面得到了广泛的研究，因为它们价格低廉、资源丰富、性能优良。在这篇综合综述中，钙钛矿过渡金属氧化物兼而有之；详细讨论了用于太阳能驱动光催化 (PC) 和光电化学 (PEC) 水分解的光阳极和光阴极催化剂/电极材料。此外，还讨论了该领域的几个主要里程碑和最近的发展。最后，概述最近的挑战，