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Ru or Pt nanoparticles have been prepared following the organometallic approach and deposited onto the surface of mesoporous graphitic carbon nitride (mpg-CN). Three different Ru-based samples have also been compared to investigate the effect of 4-phenylpyridine as a stabilizing agent. The photocatalytic performance towards the hydrogen evolution reaction (HER) has been tested showing that all hybrid systems clearly outperform the photocatalytic activity of bare mpg-CN. In particular, Pt-decorated mpg-CN yields the largest H2 production upon visible-light irradiation (870 μmol h-1 g-1, TOF = 14.1 h-1, TON = 339 after 24 h) when compared with the Ru-based samples (137-155 μmol h-1 g-1, TOFs between 2.3-2.7 h-1, TONs between 54-57 after 24 h). Long-term photochemical tests (up to 65 h irradiation) show also an improved stability of the Pt-based samples over the Ru counterpart. Photophysical experiments aimed at rationalizing the photocatalytic performance of the different hybrid systems elucidate that the enhanced activity of the Pt-decorated mpg-CN over the Ru-based analogues arises from improved electron transfer kinetics from mpg-CN to the metal nanoparticles. This journal is
|Number of pages||10|
|Publication status||Published - 1 Jan 2021|
- CHARGE SEPARATION
FingerprintDive into the research topics of 'Insights into the light-driven hydrogen evolution reaction of mesoporous graphitic carbon nitride decorated with Pt or Ru nanoparticles'. Together they form a unique fingerprint.
- 1 Active
Sala Roman, X., García-Antón Aviñó, J., Alvarez Prada, L. I., HOU, H., MARTI BALAGUER, G., Mallon Pernia, L., NATALI, M., Philippot, K., Poteau, R., Romero Fernández, N., Bofill Arasa, R. & Escriche Martinez, L.
1/06/20 → 31/05/24