Mechanistic Insights into the Unique Role of Copper in CO<sub>2</sub> Electroreduction Reactions

Liu, Shan Ping; Zhao, Ming; Wang, Gao; Jiang, Qing

doi:10.1002/cssc.201601144

Cited by 43 publications

(37 citation statements)

References 52 publications

(166 reference statements)

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“…Cu as the third group metal can generate high value‐added carbonaceous compounds at low cost . However, poor selectivity and activity degradation are two remaining challenges for practical application.…”

Section: Electrocatalysts For Electrocatalytic Co2 Reductionmentioning

confidence: 99%

Progress and Perspective of Electrocatalytic CO₂ Reduction for Renewable Carbonaceous Fuels and Chemicals

et al. 2017

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The worldwide unrestrained emission of carbon dioxide (CO2) has caused serious environmental pollution and climate change issues. For the sustainable development of human civilization, it is very desirable to convert CO2 to renewable fuels through clean and economical chemical processes. Recently, electrocatalytic CO2 conversion is regarded as a prospective pathway for the recycling of carbon resource and the generation of sustainable fuels. In this review, recent research advances in electrocatalytic CO2 reduction are summarized from both experimental and theoretical aspects. The referred electrocatalysts are divided into different classes, including metal–organic complexes, metals, metal alloys, inorganic metal compounds and carbon‐based metal‐free nanomaterials. Moreover, the selective formation processes of different reductive products, such as formic acid/formate (HCOOH/HCOO−), monoxide carbon (CO), formaldehyde (HCHO), methane (CH4), ethylene (C2H4), methanol (CH3OH), ethanol (CH3CH2OH), etc. are introduced in detail, respectively. Owing to the limited energy efficiency, unmanageable selectivity, low stability, and indeterminate mechanisms of electrocatalytic CO2 reduction, there are still many tough challenges need to be addressed. In view of this, the current research trends to overcome these obstacles in CO2 electroreduction field are summarized. We expect that this review will provide new insights into the further technique development and practical applications of CO2 electroreduction.

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Section: Electrocatalysts For Electrocatalytic Co2 Reductionmentioning

confidence: 99%

Progress and Perspective of Electrocatalytic CO₂ Reduction for Renewable Carbonaceous Fuels and Chemicals

et al. 2017

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“…Electrochemical reduction of CO 2 has attracted considerable interest in recent years, because a cost‐effective electrochemical route can not only convert the intractable CO 2 back to valuable chemicals or fuels but also may help to store intermittent energies if coupled with renewable power supplies . The electrochemical derivatives of CO 2 , including CO, HCOOH, CH 3 OH, CH 4 , and other small organic molecules, are very important chemicals .…”

Section: Figurementioning

confidence: 99%

Imidazolium Ions with an Alcohol Substituent for Enhanced Electrocatalytic Reduction of CO₂

Zhang

et al. 2017

ChemSusChem

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Electrochemical reduction of CO to CO is an attractive process for carbon capture and energy regeneration. Imidazolium ionic liquids (IMILs) are promising electrolyte catalytically active additives for this important reaction. Herein, we report functionalizing the imidazolium ion with a propanol substituent at the N site can significantly enhance the catalytic activity of IMILs, causing a positive shift of the onset potential for the CO reduction by about 90 mV in an acetonitrile electrolyte. Theoretical calculations indicated that the propanol hydroxyl could bridge a local hydrogen-bonding chain as shortcut for proton transfer, leading to a dramatic decrease of the activation barrier for the catalytic reduction of CO in IMIL.

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“…[21] Most recently, Liu et al found the *CCO is the key intermediate for C 2 H 4 formation on Cu(221)/Cu(111) surface under the influence of solid-liquid interface. [22] To our knowledge, it is still ambiguous about the effect of nanoparticle symmetry on the selectivity of CO 2 reduction.…”

Section: Introductionmentioning

confidence: 99%

Electroreduction of CO₂ on Cu Clusters: The Effects of Size, Symmetry, and Temperature

Zhao

Zhang

et al. 2019

ChemElectroChem

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Copper is a potential electrocatalyst for CO 2 electroreduction, although controlling the selectivity towards hydrocarbons and CO is still a major challenge. It is known that Cu nanoparticles show a better performance for CO 2 electro-reduction than bulk Cu. However, the roles of the size and symmetry of the Cu clusters as well as the temperature in the CO 2 -reduction process remain elusive, which hinders the development of advanced catalysts. In this study, the density functional theory (DFT) method is applied to investigate these factors. We find that the decrease of icosahedron Cu clusters' size but the increase of truncated octahedron Cu clusters' size contributes to the selectivity of CO 2 reduction. In addition, the symmetry of Cu clusters modulates the selectivity of CO 2 reduction at room temperature: the (111)-like surfaces prefer to produce hydrocarbons but the synergistic effect between (100)-and (111)-like ones favors the formation of CO, which are in reasonable agreement with the experimental measurements that distinct products are detected on different Cu nanoparticles during CO 2 reduction. We also note that the increase of temperature is favorable to CO production. Our findings not only contribute to a thorough understanding of CO 2 reduction on Cu clusters, but also provide clues for designing catalysts in future experiments.[a] Dr.

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Mechanistic Insights into the Unique Role of Copper in CO₂ Electroreduction Reactions

Cited by 43 publications

References 52 publications

Progress and Perspective of Electrocatalytic CO₂ Reduction for Renewable Carbonaceous Fuels and Chemicals

Progress and Perspective of Electrocatalytic CO₂ Reduction for Renewable Carbonaceous Fuels and Chemicals

Imidazolium Ions with an Alcohol Substituent for Enhanced Electrocatalytic Reduction of CO₂

Electroreduction of CO₂ on Cu Clusters: The Effects of Size, Symmetry, and Temperature

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Mechanistic Insights into the Unique Role of Copper in CO2 Electroreduction Reactions

Cited by 43 publications

References 52 publications

Progress and Perspective of Electrocatalytic CO2 Reduction for Renewable Carbonaceous Fuels and Chemicals

Progress and Perspective of Electrocatalytic CO2 Reduction for Renewable Carbonaceous Fuels and Chemicals

Imidazolium Ions with an Alcohol Substituent for Enhanced Electrocatalytic Reduction of CO2

Electroreduction of CO2 on Cu Clusters: The Effects of Size, Symmetry, and Temperature

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Mechanistic Insights into the Unique Role of Copper in CO₂ Electroreduction Reactions

Progress and Perspective of Electrocatalytic CO₂ Reduction for Renewable Carbonaceous Fuels and Chemicals

Progress and Perspective of Electrocatalytic CO₂ Reduction for Renewable Carbonaceous Fuels and Chemicals

Imidazolium Ions with an Alcohol Substituent for Enhanced Electrocatalytic Reduction of CO₂

Electroreduction of CO₂ on Cu Clusters: The Effects of Size, Symmetry, and Temperature