Recent Advances in Ruddlesden-Popper Phase-Layered Perovskite Sr₂TiO₄ Photocatalysts

Sr₂TiO₄, a prominent member of the Ruddlesden-Popper (RP) perovskite family, has garnered significant interest in photocatalysis, primarily owing to its distinctive two-dimensional (2D) layered structure. In this review, we provide an insightful and concise summary of the intrinsic properties of Sr₂TiO₄, focusing on the electronic, optical, and structural characteristics that render it a promising candidate for photocatalytic applications. Moreover, we delve into the innovative strategies that have been developed to optimize the structural attributes of Sr₂TiO₄. These strategies aim to maximize light absorption, improve charge separation, and accelerate the photocatalytic reaction rates. By highlighting these unique approaches, we strive to contribute to a more profound understanding of the material's potential and stimulate further advancements in developing Sr₂TiO₄-based photocatalytic systems. The review not only synthesizes the existing knowledge but also offers a perspective in future directions for research and application. As the field of photocatalysis continues to evolve, Sr₂TiO₄ stands poised to play a pivotal role in the quest for more efficient and sustainable solar energy conversion technology.