EFFECT OF THE METHOD OF PREPARATION OF ZnO/CdS AND TiO2/CdS FILM NANOHETEROSTRUCTURES ON THEIR PHOTOELECTROCHEMICAL PROPERTIES

摘要

A study was carried out on the photoelectric properties of ITO/TiO2/CdS and ITO/ZnO/CdS nanostructurized films obtained by the SILAR method and the photocatalytic reduction of sulfur by ethanol in the presence of Cd(II) salts. The nanostructures obtained by the latter method display much higher photocurrent density (by a factor of 2 in the case of systems derived from ZnO and a factor of 5 in systems derived from TiO2) upon irradiation with white light (k > 400 nm) in aqueous solutions of sodium sulfide than the heterostructures obtained by the traditional SILAR method.