Unraveling Crystal Phase-Driven Activity and Selectivity of WO₃ for Photoelectrochemical Biomass Valorization.

ABSTRACT: Modulating the crystal phase of a photocatalyst significantly impacts its surface and photochemical properties, allowing for the adjustment of catalytic activity and selectivity, particularly in the electrooxidation reactions of biomass-derived chemicals. Herein, monoclinic and hexagonal phases of WO₃ are employed as photoanodes for the photoelectrochemical conversion of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF). The monoclinic phase demonstrated exceptional performance in photoelectrocatalytic HMF oxidation, achieving remarkable photocurrent densities (1.1 mA cm^-2), which were 5.5 times greater than those observed for hexagonal WO₃. Moreover, the yield of DFF products obtained over monoclinic WO₃ was approximately 2.5 times higher

SUBMITTER: Wu CC 

PROVIDER: S-EPMC11776042 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature