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FLAVIN‐MEDIATED PRODUCTION OF HYDROGEN PEROXIDE IN PHOTOELECTROCHEMICAL CELLS
Author(s) -
Roncel Mercedes,
Navarro José A.,
Rosa Francisco F. De la,
Rosa Miguel A. De la
Publication year - 1984
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1984.tb04605.x
Subject(s) - hydroxylamine , hydrogen peroxide , chemistry , cathodic protection , flavin group , inorganic chemistry , photochemistry , oxygen , flavin mononucleotide , photoelectrochemical cell , electrolysis , electrode , anode , electrolyte , organic chemistry , enzyme
A photoelectrochemical cell for hydrogen peroxide production using flavin photosystems is described. The anodic solution, which is kept free of oxygen by passing an Ar stream through it, contains the photoreceptor (flavin mononucleotide or lumiflavin) and the electron donor (EDTA, semicarbazide or hydroxylamine), while the peroxide is formed at the electrode of the cathodic solution, whose oxygen content is increased by bubbling with pure oxygen. Among several electrode metals that have been tested (Ag, Pt and Hg), Hg is the most efficient. The pH of the anodic and cathodic solutions should be adjusted to 14 and 1, respectively, for optimum results.