Abstract
The photoelectrochemical anodic reforming of alcohols was studied on a porous nanoparticulate film which was illuminated with a UV radiation. The photoinduced open circuit voltage and the produced photocurrent were dependent on the nature of the alcohol molecule and on the film thickness. With increasing film thickness and/or alcohol concentration, the becomes more negative, acquiring values varying between and versus reference hydrogen electrode. This was followed by a corresponding increase in the . This behavior can be attributed to the possibility that characterizes a nanoparticulate porous film to be penetrated by the electrolyte and depleted from the majority charge carriers (electrons in the conduction band). The optimum film thickness for the given UV radiation depends on the applied positive reversed bias potential and lies between 3 and , while the optimum alcohol concentration lies between and , depending on the nature of the alcohol present in the solution.
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