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

Paper ID Volume ID Publish Year Pages File Format Full-Text
44741 46344 2016 7 PDF Available
Title
Water oxidation-coupled, photoelectrochemical redox biocatalysis toward mimicking natural photosynthesis
Abstract

•This work offers a new strategy for redox biocatalysis with water as an electron donor.•FeOOH layer deposited on Fe2O3 surface decreased reaction barriers for water oxidation.•Black silicon exhibited superior capacity to drive NAD+ reduction.

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 β-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.

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Keywords
Photosynthesis; Biocatalysis; NADH regeneration; Water oxidation; FeOOH
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Water oxidation-coupled, photoelectrochemical redox biocatalysis toward mimicking natural photosynthesis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 198, 5 December 2016, Pages 311–317
Authors
, , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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