Controlled Periodic Illumination Enhances Hydrogen Production by over 50% on Pt/TiO2
Efficient solar water photosplitting is plagued by large overpotentials of the HER and OER. Even with a noble metal catalyst, the hydrogen evolution reaction can be limited by the strong M-H bonding over some metals, such as Pt, Pd, and Rh, inhibiting hydrogen desorption. H absorption is regulated by the potential at the metal nanoparticles. Through controlled periodic illumination of a Pt/TiO2 suspension, we hypothesized a fast variation of the photopotential that induced catalytic surface resonance on the metal, resulting in more than a 50% increase of the efficiency at frequencies higher th... Mehr ...
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| Dokumenttyp: | Artikel |
| Erscheinungsdatum: | 2021 |
| Schlagwörter: | controlled periodic illumination / hydrogen evolution reaction / photoreforming / sabatier / surface catalytic resonance / titanium dioxide / volcano plot |
| Sprache: | Englisch |
| Permalink: | https://search.fid-benelux.de/Record/base-29257405 |
| Datenquelle: | BASE; Originalkatalog |
| Powered By: | BASE |
| Link(s) : | http://hdl.handle.net/2318/1835426 |
Efficient solar water photosplitting is plagued by large overpotentials of the HER and OER. Even with a noble metal catalyst, the hydrogen evolution reaction can be limited by the strong M-H bonding over some metals, such as Pt, Pd, and Rh, inhibiting hydrogen desorption. H absorption is regulated by the potential at the metal nanoparticles. Through controlled periodic illumination of a Pt/TiO2 suspension, we hypothesized a fast variation of the photopotential that induced catalytic surface resonance on the metal, resulting in more than a 50% increase of the efficiency at frequencies higher than 80 Hz.