(Oxy)nitrides and Oxysulfides as Visible-Light-Driven Photocatalysts for Overall Water Splitting

Abstract

Overall water splitting to form hydrogen and oxygen using a particulate photocatalyst with solar energy is a promising process for clean hydrogen production in large-scale. In recent years, numerous attempts have been made for the development of photocatalysts that work under visible-light irradiation to efficiently utilize solar energy. This chapter presents recent research progress in the development of visible-light-driven photocatalysts, focusing on the refinement of non-oxide type photocatalysts such as (oxy)nitrides and oxysulfides. These materials harvest visible photons (450-700 nm), and work as stable photocatalysts for water reduction and oxidation under visible-light.