Researchers are exploring the use of photocatalysts for various applications, including the reduction of CO2 and the degradation of dyes. The development of new photocatalytic materials and mechanisms, such as heterostructures and covalent organic frameworks, is being studied. The field of photocatalysis is seeing advancements in areas like Sm(II)-mediated reductions and photo-assisted CO2 reduction, with potential applications in organic synthesis and environmental remediation.