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Article Dans Une Revue ACS Energy Letters Année : 2024

Unassisted Solar Syngas Production by a Molecular Dye-Cobalt Catalyst Assembly in a Tandem Photoelectrochemical Cell

Résumé

cological transition requires the development of carbon capture and utilization technologies powered by renewable energies. Direct solar conversion of CO2 in photoelectrochemical cells is a promising approach to produce syngas, en route to fuels and chemicals. We report here on a dyad based on a Ru-based metallorganic dye and a tetraazamacrocyclic cobalt catalyst grafted on NiO to form efficient molecular photocathodes for CO-rich syngas production (ratio of CO/H-2 > 80:20) from a CO2-saturated aqueous bicarbonate buffer. After integration with a BiVO4/CoPi photoanode in a tandem photoelectrochemical cell in a Z-scheme configuration, syngas could be produced from CO2 water with Faradaic efficiencies (FE) of 62 % and 14 % for CO and H-2, respectively, under visible light and in the absence of any applied bias, equating to a solar to fuel conversion efficiency of 1.3 x 10(-2) %.
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Dates et versions

hal-04490620 , version 1 (05-03-2024)

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  • HAL Id : hal-04490620 , version 1

Citer

Duc N. Nguyen, Emmanouil Giannoudis, Tatiana Straistari, Jennifer Fize, Matthieu Koepf, et al.. Unassisted Solar Syngas Production by a Molecular Dye-Cobalt Catalyst Assembly in a Tandem Photoelectrochemical Cell. ACS Energy Letters, 2024, 9, pp.829-834. ⟨hal-04490620⟩
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