Electrochemical reduction of CO2 at metallic electrodes

Augustyński, Jan; Kędzierzawski, P.; Jermann, B.

doi:10.1016/s0167-2991(98)80731-3

Cited by 15 publications

(12 citation statements)

References 21 publications

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“…However, the EC reduction of CO 2 suffers from one or more of the following problems: low energetic efficiency (i.e., large overpotential requirement), rapid loss of CO 2 reduction activity in favor of H 2 O reduction, and poor selectivity. 11,12 To achieve a more efficient catalytic process, photoelectrocatalytic (PEC) processes have been studied using visible light-sensitive materials to convert CO 2 to small-molecule organic fuels. [13][14][15][16][17] The rst use of a photocatalyst, as a photocathode, for the PEC reduction of CO 2 was reported over 30 years ago.…”

Section: Introductionmentioning

confidence: 99%

High-efficiency synergistic conversion of CO₂ to methanol using Fe₂O₃ nanotubes modified with double-layer Cu₂O spheres

Hua

et al. 2014

Nanoscale

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Cuprous oxide/hematite nanotubes (Cu2O/Fe2O3NTs) were prepared by a potentiostatic electrodeposited method, in which different structured Cu2O materials were modified onto Fe2O3 NTs surface. Among them, the material with double-layer Cu2O spheres (Cu2O/Fe2O3 NTs-30) showed excellent photoelectrocatalytic (PEC) properties with a suitable energy band gap (1.96 eV) and a smaller overpotential (0.18 V). Furthermore, Cu2O/Fe2O3 NTs-30 showed two types of synergisms in the PEC reduction of CO2: (i) between electrocatalysis and photocatalysis and (ii) between Cu2O and Fe2O3NTs. The faradaic efficiency and methanol yield reached 93% and 4.94 mmol L(-1) cm(-2) after 6 h, respectively.

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Section: Introductionmentioning

confidence: 99%

High-efficiency synergistic conversion of CO₂ to methanol using Fe₂O₃ nanotubes modified with double-layer Cu₂O spheres

Hua

et al. 2014

Nanoscale

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“…To this end, researchers have evaluated most polycrystalline metals as electrodes for room-temperature CO 2 reduction in aqueous solutions . While several polycrystalline metals are competent for CO 2 reduction under these conditions, all suffer from one or more of the following problems: low energetic efficiency (i.e., high overpotential requirement), poor selectivity, and rapid loss of CO 2 reduction activity in favor of H 2 O reduction. − …”

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confidence: 99%

Aqueous CO₂ Reduction at Very Low Overpotential on Oxide-Derived Au Nanoparticles

2012

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Carbon dioxide reduction is an essential component of many prospective technologies for the renewable synthesis of carbon-containing fuels. Known catalysts for this reaction generally suffer from low energetic efficiency, poor product selectivity, and rapid deactivation. We show that the reduction of thick Au oxide films results in the formation of Au nanoparticles ("oxide-derived Au") that exhibit highly selective CO(2) reduction to CO in water at overpotentials as low as 140 mV and retain their activity for at least 8 h. Under identical conditions, polycrystalline Au electrodes and several other nanostructured Au electrodes prepared via alternative methods require at least 200 mV of additional overpotential to attain comparable CO(2) reduction activity and rapidly lose their activity. Electrokinetic studies indicate that the improved catalysis is linked to dramatically increased stabilization of the CO(2)(•-) intermediate on the surfaces of the oxide-derived Au electrodes.

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“…Although the study of ECR has achieved unprecedented results in recent years, there are still some deficiencies and challenges for its own large-scale production and commercial application. 73 First, CO 2 is an inert gas, which requires a large activation energy in its reduction process, so the electron transfer process requires a high potential. In addition, a hydrogen evolution side reaction will occur in the reduction process.…”

Section: Fundamentals Of Ecrmentioning

confidence: 99%

Ionic Liquids-Promoted Electrocatalytic Reduction of Carbon Dioxide

Cui

Liu

et al. 2020

Ind. Eng. Chem. Res.

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The excessive consumption of global fossil fuels leads to the rapid increase of CO2 content in the atmosphere, causing serious consequences, such as global warming, which have attracted extensive attention from the international community. As a kind of abundant and inexpensive carbon resource, CO2 can be converted into high-utilization chemicals and fuels, and its resource utilization is of great significance to environmental protection and energy security. Among the many CO2 conversion technologies, electrochemical CO2 reduction (ECR) is considered to be one of the most promising methods, and it is a research hotspot in the world at present. In recent years, ionic liquids (ILs) have provided opportunities for the electroreduction of CO2 due to their unique physical and chemical properties. ILs have attracted more and more attention in the electrochemical reduction of CO2 due to their advantages of reducing reaction overpotential, inhibiting the hydrogen evolution reaction (HER), and improving product selectivity. In this paper, the research progress in recent years of ILs in electrocatalytic CO2 reduction is reviewed from three aspects: adsorption of CO2 by ILs, ILs-based electrolyte, and modification and preparation of electrodes in ILs. At the end of this paper, some issues and challenges to which more attention needs to be paid in future research were discussed as well.

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Electrochemical reduction of CO2 at metallic electrodes

Cited by 15 publications

References 21 publications

High-efficiency synergistic conversion of CO₂ to methanol using Fe₂O₃ nanotubes modified with double-layer Cu₂O spheres

High-efficiency synergistic conversion of CO₂ to methanol using Fe₂O₃ nanotubes modified with double-layer Cu₂O spheres

Aqueous CO₂ Reduction at Very Low Overpotential on Oxide-Derived Au Nanoparticles

Ionic Liquids-Promoted Electrocatalytic Reduction of Carbon Dioxide

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Electrochemical reduction of CO2 at metallic electrodes

Cited by 15 publications

References 21 publications

High-efficiency synergistic conversion of CO2 to methanol using Fe2O3 nanotubes modified with double-layer Cu2O spheres

High-efficiency synergistic conversion of CO2 to methanol using Fe2O3 nanotubes modified with double-layer Cu2O spheres

Aqueous CO2 Reduction at Very Low Overpotential on Oxide-Derived Au Nanoparticles

Ionic Liquids-Promoted Electrocatalytic Reduction of Carbon Dioxide

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Product

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High-efficiency synergistic conversion of CO₂ to methanol using Fe₂O₃ nanotubes modified with double-layer Cu₂O spheres

High-efficiency synergistic conversion of CO₂ to methanol using Fe₂O₃ nanotubes modified with double-layer Cu₂O spheres

Aqueous CO₂ Reduction at Very Low Overpotential on Oxide-Derived Au Nanoparticles