TY - JOUR
T1 - Insights into the light-driven hydrogen evolution reaction of mesoporous graphitic carbon nitride decorated with Pt or Ru nanoparticles
AU - Álvarez Prada, Luis Ignacio
AU - Nguyen, Anh Dung
AU - Romero Fernández, Nuria
AU - HOU, HETING
AU - Benazzi, Elisabetta
AU - Escriche Martinez, Luis
AU - Acharjya, Amitava
AU - Thomas, Arne
AU - Schwarze, Michael
AU - Schomäcker, Reinhard
AU - Sala Roman, Xavier
AU - Natali, Mirco
AU - Garcia Anton Aviño, Jordi
AU - Tasbihi, Minoo
N1 - Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - 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
AB - 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
KW - CHARGE SEPARATION
KW - ELECTROCATALYSTS
KW - G-C3N4
KW - SYSTEM
KW - VISIBLE-LIGHT
KW - WATER
UR - http://dx.doi.org/10.1039/d1dt03006j
UR - http://www.scopus.com/inward/record.url?scp=85122724370&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/42261616-7584-3227-95bd-2e5406dd7e4c/
U2 - 10.1039/d1dt03006j
DO - 10.1039/d1dt03006j
M3 - Article
C2 - 34918734
SN - 1477-9226
VL - 51
SP - 731
EP - 740
JO - DALTON TRANSACTIONS
JF - DALTON TRANSACTIONS
IS - 2
ER -