CO 2 electroreduction in water with a heterogenized Csubstituted Nickel cyclam catalyst - Sorbonne Université Access content directly
Journal Articles Inorganic Chemistry Year : 2022

CO 2 electroreduction in water with a heterogenized Csubstituted Nickel cyclam catalyst

Abstract

Molecular catalysis for selective CO 2 electroreduction into CO can be achieved with a variety of metal complexes. Their immobilization on cathodes is required for their practical implementation in electrolytic cells and can benefit from the advantages of a solid material such as easy separation of products and catalysts, efficient electron transfer to the catalyst and high stability. However, this approach remains unsufficiently explored up to now. Here, using an appropriate and original modification of the cyclam ligand, we report a novel [Ni(cyclam)] 2+ complex which can be immobilized on carbon nanotubes. This material, once deposited on a gas diffusion layer, provides a novel electrode which is remarkably selective for CO 2 electroreduction to CO, not only in organic solvents but, more remarkably, in water, with faradic efficiencies for CO larger than 90% and current densities of 5-10 mA.cm-2 during Controlled potential Electrolysis in H-cells.
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Dates and versions

hal-03796761 , version 1 (04-10-2022)

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Silvia Pugliese, Ngoc Tran Huan, Albert Solé-Daura, Yun Li, Jose-Guillermo Rivera de la Cruz, et al.. CO 2 electroreduction in water with a heterogenized Csubstituted Nickel cyclam catalyst. Inorganic Chemistry, 2022, ⟨10.1021/acs.inorgchem.2c01645⟩. ⟨hal-03796761⟩
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