photocatalytic water division. The invention is directed to a method for photocatalytic division of water, and to an apparatus for performing said method. The method of the invention comprises the oxidation of water with an oxygen evolution photocatalyst by light irradiation, causing an electron to be generated in the conduction band of the oxygen evolution photocatalyst and a hole to be generated in the valence band of the oxygen evolution photocatalyst. photocatalyst of oxygen evolution; reduction of water with a hydrogen evolution photocatalyst by light irradiation, causing an electron to be generated in the hydrogen evolution photocatalyst conduction band and a hole to be generated in the hydrogen evolution photocalisaodr valence band; wherein said oxygen evolution photocatalyst is in contact with a first side of an electrically conductive separation layer and said hydrogen evolution photocatalyst is in contact with a second side of said electrically conductive separation layer, and where the electron of the Conduction band of the light-excited oxygen evolution photocatalyst recombines with the bore from the valence band of the light-excited hydrogen evolution photocatalyst through charge transfer through the electrically conductive separation layer.
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