Light-Driven Catalytic Upgrading of Butanol in a Biohybrid Photoelectrochemical System.

ABSTRACT: This paper reports the design and preparation of a biohybrid photoelectrochemical cell (PEC) that can drive the tandem enzymatic oxidation and aldol condensation of n-butanol (BuOH) to C₈ 2-ethylhexenal (2-EH). In this work, BuOH was first oxidized to n-butyraldehyde (BA) by the alcohol oxidase enzyme (AOx), concurrently generating hydrogen peroxide (H₂O₂). To preserve enzyme activity and increase kinetics nearly 2-fold, the H₂O₂ was removed by oxidation at a bismuth vanadate (BiVO₄) photoanode. Organocatalyzed aldol condensation of C₄ BA to C₈ 2-EH improved the overall BuOH conversion to 6.2 ± 0.1% in a biased PEC after 16 h. A purely light-driven, unbiased PEC showed 3.1 ± 0.1% BuOH conv

SUBMITTER: Harris AW 

PROVIDER: S-EPMC7597823 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature