Water oxidation-coupled, photoelectrochemical redox biocatalysis toward mimicking natural photosynthesis

Redox enzymes are industrially important for catalyzing highly complex reactions because of their excellent regio- and stereo-selectivity; however, broad application of redox enzymes has been often limited by the requirement of stoichiometric supply of cofactors such as S-nicotinamide adenine dinucleotide (NADH). Here, we report light-driven cofactor regeneration coupled with water oxidation by employing a photoelectrochemical cell platform consisted of a FeOOH/Fe2O3 photoanode and a black silicon photocathode. The FeOOH layer deposited on Fe2O3 surface decreased reaction barriers for water oxidation. The black silicon photocathode exhibited high photocurrent response and superior capacity to drive cofactor reduction. The cofactor regeneration yield in the photoelectrochemical cell was almost two-fold higher than that obtained in homogenous system, which demonstrates that photoelectrochemical cell is a promising platform for redox biocatalytic reactions using water as an electron donor. (C) 2016 Elsevier B.V. All rights reserved
Publisher
ELSEVIER SCIENCE BV
Issue Date
2016-12
Language
ENG
Keywords

NONENZYMATIC REGENERATION; ARTIFICIAL PHOTOSYNTHESIS; HEMATITE PHOTOANODES; EFFICIENT; NICOTINAMIDE; PERFORMANCE; LIGHT; NANOSTRUCTURES; OXYHYDROXIDE; CRYSTALLINE

Citation

APPLIED CATALYSIS B-ENVIRONMENTAL, v.198, pp.311 - 317

ISSN
0926-3373
DOI
10.1016/j.apcatb.2016.05.077
URI
http://hdl.handle.net/10203/213449
Appears in Collection
MS-Journal Papers(저널논문)
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