Kinetics of the photocatalysed reduction of oxygen by CdS probed using photoinduced absorption spectroscopy (PIAS)

Abstract

Photoinduced absorption spectroscopy, PIAS, is used to determine the order of reaction and so identify the rate determining step in the reduction of O₂ by a sacrificial electron donor, photocatalysed by a nanoparticular film of CdS. This is the first report on the use of PIAS to probe the kinetics of photocatalysis exhibited by a non-oxide semiconductor.