Visible-Light-Controlled Oxidation of Glucose using Titania-Supported Silver Photocatalysts.

ABSTRACT: The visible-light-mediated photo-catalytic selective valorisation of glucose using TiO₂-supported Ag nanoparticles is shown for the first time. The optimisation of the catalyst composition, substrate-to-catalyst ratio and reaction medium proved that a near total suppression of the mineralisation pathway could be achieved with a selectivity to partial oxidation products and small-chain monosaccharides as high as 98 %. The primary products were determined to be gluconic acid, arabinose, erythrose, glyceraldehyde and formic acid. Under UVA light, the selectivity to organics decreases because of the production of CO₂ from mineralisation. A reaction mechanism is proposed based on an α-scission process combined with the Ruff degradation reaction, which explains the presence

SUBMITTER: Da Via L 

PROVIDER: S-EPMC5396341 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature