Kirkuk University Journal-Scientific Studies

Abstract

Hydrazones derived from 4- phenoxybutanoic acid were reprepared and their oxidation potentials in
Micellar-Ethanol solution were measured using cyclic voltammetric technique. These compounds were used as
photosensitizers in three component system containing methyl viologen (MV
2+
) and Na2EDTA. Different
behaviors of the hydrazones were observed as photosensitizers depending on their oxidation potential values and
their stability in irradiation solution. Rate constants of methylviologen reduction by the photochemical active
hydrazones were recoded and hydrogen was photoproduced using TiO
2 as catalyst