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Journal Articles European Journal of Inorganic Chemistry Year : 2021

Nickel Complexes and Carbon Dots for Efficient Light‐Driven Hydrogen Production

Abstract

Nitrogen-doped carbon dots were used as photosensitizers for H2 evolution in the presence of a series of mononuclear thiosemicarbazone nickel complexes. The catalysts were designed to display different substituents at the para position of the phenyl rings. These chemical modifications tune the electron-donating abilities of the complexes and influence their capability to reduce protons into hydrogen. All photocatalytic experiments were performed in aqueous solution, using as sacrificial electron donor TCEP/Asc (1:1), 0.1 M each, at pH=5. The complex bearing the most electron-donating ligand with the dimethylamino (N(CH3)2) substituent behaves as the best catalyst in our series of photocatalytic systems with TONCAT = 148, under white led radiation for 30 h. Therefore, this noble metalfree system can effectively produce hydrogen in water and further chemical modification of the ligand will likely improve its production.
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Dates and versions

hal-03862123 , version 1 (23-11-2022)

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Kalliopi Ladomenou, Michael Papadakis, Georgios Landrou, Michel Giorgi, Charalambos Drivas, et al.. Nickel Complexes and Carbon Dots for Efficient Light‐Driven Hydrogen Production. European Journal of Inorganic Chemistry, 2021, 2021 (30), pp.3097-3103. ⟨10.1002/ejic.202100449⟩. ⟨hal-03862123⟩
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