Artificial photosynthesis is the process of converting solar energy into useful fuels and represents a significant achievement in the production of clean energy for the planet.In the process, energy is generated from water and CO2 reduction using solar-powered photocatalysis.This book provides a comprehensive overview of recently developed, multifunctional materials as visible light-driven catalysts, their mechanisms and applications in solar energy utilisation and conversion.Chapters highlight the use of different approaches such as molecular catalysis, nanomaterials systems, as well as thin-films for solar-driven evolution of renewable fuels, such as hydrogen.This is the first book to give an overview of this area, with chapters specifically interesting for those looking towards industrial applications.With in-depth discussions ranging from understanding, to engineering of materials and applied devices, it will be suitable for industry professionals, researchers and students interested in understanding of the current state of photocatalysis research and its possible applications in the energy domain.