KINETICS AND MECHANISM OF PHOTO‐INDUCED METHYL VIOLOGEN REDUCTION WITH ZINC‐MESO‐TETRAPHENYLPORPHYRINTRISULFONIC ACID AND HYDROGEN EVOLUTION FROM WATER HYDROGENASE
- 1 March 1981
- journal article
- research article
- Published by Wiley in Photochemistry and Photobiology
- Vol. 33 (3) , 413-416
- https://doi.org/10.1111/j.1751-1097.1981.tb05439.x
Abstract
Abstract— The formation of the cation radical of methyl viologen was established when an aqueous solution containing zinc‐meso‐tetraphenylporphyrintrisulfonic acid, methyl viologen and mercaptoethanol was irradiated by visible light. The reduction of methyl viologen has been studied kinetically and the reduction rate expressed as followswhere [Zn]0 is the total amount of zinc compounds in the system.On the basis of the rate expression, the reaction mechanism is discussed.On the addition of hydrogenase to the above photoirradiation system, hydrogen evolution was observed by both the irradiation of sunlight and a tungsten lamp.Keywords
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