FLAVIN-MEDIATED PRODUCTION OF HYDROGEN PEROXIDE IN PHOTOELECTROCHEMICAL CELLS |
| |
| Authors: | Mercedes Roncel José A Navarro Francisco F De la Rosa Miguel A De la Rosa |
| |
| Institution: | Departamento de Bioquimica, Facultad de Biologia y CSIC, Apartado 1095, Sevilla, Spain |
| |
| Abstract: | 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. |
| |
| Keywords: | |
|
|
