Controlled Periodic Illumination Enhances Hydrogen Production by over 50% on Pt/TiO2

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 b...

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Veröffentlicht in:ACS catalysis 2021-06, Vol.11 (11), p.6484-6488
Hauptverfasser: Sordello, F, Pellegrino, F, Prozzi, M, Minero, C, Maurino, V
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creator Sordello, F
Pellegrino, F
Prozzi, M
Minero, C
Maurino, V
description 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.
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title Controlled Periodic Illumination Enhances Hydrogen Production by over 50% on Pt/TiO2
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