Carlos Sanchez - Electrolyte engineering for electrochemical CO2 reduction
- document 1 document 2 document 3
- niveau 1 niveau 2 niveau 3
- audio 1 audio 2 audio 3
Descriptif
Ionic liquids(ILs) in electrocatalysis have attracted a lot of attention from the seminal work of Rosen et al. [1] where they achieved arelevant overpotential decrease for CO2 reduction reaction (CO2RR)on a silver electrode. Moreover, ILs have been proposed as organic promoters forenhancing the catalytic activity by modifying the electrostatic properties atthe electrochemical interface. Then, electrolyte engineering has become apowerful way to impact on the stability of reaction intermediates and controlreaction selectivity.
The role ofdifferent ILs as simultaneous supporting electrolyte and co-catalyst inacetonitrile for CO2 electroreduction in the presence of a modelmolecular catalyst [Re(bpy)(CO)3Cl]is presented here. [2] In particular, the nature of the cation, anion andcation alkyl chain is varied by a choice of 5 different ILs, includingimidazolium and pyrrolidinium cations and their results are compared toconventional benchmark supporting electrolyte. Under catalytic conditions anoverpotential diminution of 0.33 Vfor CO2 to CO conversion is achieved in the presence of ILs. Finally,a mechanistic explanation is provided to justify this behaviour.
[1] Rosen,B.A.; Salehi-Khojin, A.; Thorson, M.R.; Zhu, W.; Whipple, D.T.; Kenis, P.J.A.;Masel, R.I. Science 2011, 334 (6056), 643.
[2] Vichou,E.; Xu-Li, Y.; Gomez-Mingot, M.; Fontecave, M.; Sánchez-Sánchez, C.M. J. Phys. Chem. C 2020, 124, 23764.
Thème
Notice
Dans la même collection
-
Juan Matos - H2 production on 1D and 2D Carbon-containing Fe-, Co, and Ni-based foamy catalysts.
C-containing Fe-, Co-, and Ni-based catalysts have been synthesized from the controlled pyrolysis of saccharose. The topological properties of the 2D materials were significantly different from
-
Athanasios G. Konstandopoulos - Material and Reactor Technologies for Solar Fuels
The synthesis of carbon-neutral/zero-carbon footprint fuels via solar thermochemical processes (“Solar Fuels”) represents a promising approach for the realization of a sustainable energy future.
-
Pascal Brault - Reactive molecular dynamics simulations of H2 production and conversion
Since H2 production and conversion efficiencies can be improved and monitored at the molecular scale, reactive molecular dynamics simulations (rMDS) are expected to be of great promise for
-
Sixto Malato - Solar photocatalytic hydrogen production at pilot scale
Solar energy is well-recognized as a sustainable and clean energy source. Among the various approaches to solar energy conversion, solar-driven hydrogen production is one of the most promising ways
-
Olivier Joubert - Brief Overview of Current French Hydrogen Research Activities, Focus on Materials
Twenty years ago, the French scientific community working in the field of hydrogen, started to federate under the leadership of the CNRS. It took the form of successive Research Grouping (GdR)
-
Ally Aukaloo - From molecular to nanostructured materials for artificial photosynthesis
Inspired by chemical subtleties at the active sites of enzymes dealing with the CO2 management in our biosphere, we will discuss on how hydrogen bonding and electrostatic effects may thrive the
-
Giuseppe Marci - Photocatalytic reduction of CO2 in gas-solid and in liquid-solid regimes
The increasing CO2 level in the atmosphere is a global environmental problem; therefore, the development of efficient catalytic processes for CO2 reduction is a challenge. Heterogeneous photo
-
José Solla-Gullon - Recent advances and remaining challenges on the use of shape-controlled-metal n…
The incorporation of shape-controlled metal nanoparticles in Electrocatalysis is contributing significantly to a better understanding of the correlations between surface structure and
-
Alejandro Anson-Casaos - Photoelectrochemical characterization of C/TiO2 and C/ZnO nanomaterials in…
Carbon nanostructures, including single-walled carbon nanotubes, reduced graphene oxide, and carbon dots, are inserted in TiO2 and ZnO photoanodes with the aim of improving their activity. For the
-
Christel Laberty-Robert - Impact of Electrodes Nanostructuration on Photoelectrochemical Performanc…
Hydrogen is presented by some industrialists and managers as a potential pillar of the ecological transition, particularly in the context of transport (hydrogen-powered cars, hydrogen-powered
-
Joaquim Faria - Carbon geometries as the base concept for developing efficient photocatalysts
During the past several decades' new carbon allotropes have been accounted for and synthesised. Many notable breakthroughs include exciting works on synthesis, functionalisation, characterisation
-
Hermenegildo García - Getting closer to a large scale process. Photocatalysts for light-assisted CO…
There is an urgent need to diminish atmospheric CO2 emissions to meet with the International agreements on global warming and climate change. One of the possible strategies is the utilization of
