A Photocatalytic System Splitting Water Into H₂ And O₂ Mimicking Z-Scheme Mechanism

Hydrogen energy is well recognized as one of the most ideal energy to solve the energy and environmental problems confronting the whole society currently, and the development of hydrogen energy has been attracted more attention. Among these ways and methods deployed to develop hydrogen, splitting water to H2 using semiconductor photocatalysts is one of the most promising and ideal way considering energy cost, resource and environmental issues. It is possible to employ visible light by photocatalytic water splitting system mimicking Z-scheme mechanism.This dissertation began with the introduction of the ways of photocatalytic water splitting, and explained the mechanism of the watersplitting, typical photocatalysts, and the factors which relate to the activity of the photocatalyst. Subsequently the mechanism of Z-scheme water splitting was clarified.