On the photochemical formation of peroxide in the system disodium Anthraquinone-2,6-disulfonate-methylviologen-water-ethanol-sodium hydroxide

Abstract

Reduction of oxygen by anthraquinone radicals is shown to be responsible for the formation of hydrogen peroxide in the title system. Spectroscopic evidence indicates that the hydroquinone is formed by photoreduction of the anthraquinone through sequential one-electron steps.