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Photocatalytic reforming of biomass-derived oxygenates leads to H2 generation and evolution of CO2 via parallel formation of organic intermediates through anodic oxidations on a Rh/TiO2 photocatalyst. The reaction pathways and kinetics in the photoreforming of C3–C6 polyols were explored. Polyols are converted via direct and indirect hole transfer pathways resulting in (i) oxidative rupture of C–C...
··Ti]+ sites, in contrast, cleave a C–H bond, forming carbon centered radicals, which are further oxidized by transferring an electron to the conduction band of the semiconductor. On Rh/GaN:ZnO, glycolaldehyde is the main product, forming higher oxidized C2-oxygenates in turn by reaction with free oxygen radicals formed as product of OH− photocatalytic oxidation. The overall rates of photoreforming...
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