| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 25954 | Journal of Photochemistry and Photobiology A: Chemistry | 2014 | 5 Pages |
•Photogeneration of H2 from water–alcohol is enhanced in optical fiber honeycombs.•The amount of H2 produced is: methanol ∼ ethanol ∼ glycerol > bio-ethanol ≫ bio-glycerol. Impurities in bio-alcohols inhibit hole scavenging capacity.
Cordierite honeycombs loaded with 1 wt.% Au/TiO2 have been used in an optical fiber photoreactor illuminated with UV LEDs to produce hydrogen at 298 K from aqueous methanol, ethanol, glycerol, bio-ethanol, and bio-glycerol in liquid phase. The amount of alcohol has been varied between 1% and 100%. Under the same photoreaction conditions, the amount of hydrogen produced follows the trend: methanol ∼ ethanol ∼ glycerol > bio-ethanol ≫ bio-glycerol. Hydrogen photogeneration is significantly enhanced (4–5-fold increase) in the optical fiber honeycomb photoreactor with respect to a conventional slurry photoreactor.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
