A Multi-Heme Flavoenzyme as a Solar Conversion Catalyst

The enzyme flavocytochrome c 3 (fcc3), which catalyzes hydrogenation across a CC double bond (fumarate to succinate), is used to carry out the fuel-forming reaction in an artificial photosynthesis system. When immobilized on dye-sensitized TiO2 nanoparticles, fcc3 catalyzes visible-light-driven suc...

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Bibliographic Details
Published inJournal of the American Chemical Society Vol. 136; no. 37; pp. 12876 - 12879
Main Authors Bachmeier, Andreas, Murphy, Bonnie J, Armstrong, Fraser A
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 17.09.2014
Subjects
Catalysis
Coloring Agents - chemistry
Cytochrome c Group - metabolism
Electrodes
Enzymes, Immobilized - metabolism
Light
Nanoparticles - chemistry
Photosynthesis
Shewanella putrefaciens - enzymology
Solar Energy
Succinate Dehydrogenase - metabolism
Succinic Acid - metabolism
Tin Compounds - chemistry
Titanium - chemistry
Water - chemistry
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Summary:The enzyme flavocytochrome c 3 (fcc3), which catalyzes hydrogenation across a CC double bond (fumarate to succinate), is used to carry out the fuel-forming reaction in an artificial photosynthesis system. When immobilized on dye-sensitized TiO2 nanoparticles, fcc3 catalyzes visible-light-driven succinate production in aqueous suspension. Solar-to-chemical conversion using neutral water as the oxidant is achieved with a photoelectrochemical cell comprising an fcc3-modified indium tin oxide cathode linked to a cobalt phosphate-modified BiVO4 photoanode. The results reinforce new directions in the area of artificial photosynthesis, in particular for solar-energy-driven synthesis of organic chemicals and commodities, moving away from simple fuels as target molecules.
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ISSN:0002-7863
1520-5126
DOI:10.1021/ja507733j