Carbon nanotube containing Ag catalyst layers for efficient and selective reduction of carbon dioxide

Ma, Sichao; Luo, Raymond; Gold, Jake I.; Yu, Aaron Z.; Kim, Byoungsu; Kenis, Paul J. A.

doi:10.1039/c6ta00427j

Cited by 176 publications

(130 citation statements)

References 34 publications

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“…Designing a novel electrode with advanced structures is another important direction to enhance the selective C 2+ production. In early stage, the working electrodes are nonporous metal foils and suffer from sluggish mass transfer (26,105). As a result, GDE was proposed to alleviate the poor cell performance by providing hydrophobic channels that facilitate CO 2 diffusion to catalyst particles (121).…”

Section: Structure Of a Gdementioning

confidence: 99%

Strategies in catalysts and electrolyzer design for electrochemical CO ₂ reduction toward C ₂₊ products

et al. 2020

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In light of environmental concerns and energy transition, electrochemical CO 2 reduction (ECR) to value-added multicarbon (C 2+ ) fuels and chemicals, using renewable electricity, presents an elegant long-term solution to close the carbon cycle with added economic benefits as well. However, electrocatalytic C─C coupling in aqueous electrolytes is still an open challenge due to low selectivity, activity, and stability. Design of catalysts and reactors holds the key to addressing those challenges. We summarize recent progress in how to achieve efficient C─C coupling via ECR, with emphasis on strategies in electrocatalysts and electrocatalytic electrode/reactor design, and their corresponding mechanisms. In addition, current bottlenecks and future opportunities for C 2+ product generation is discussed. We aim to provide a detailed review of the state-of-the-art C─C coupling strategies to the community for further development and inspiration in both fundamental understanding and technological applications.

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Section: Structure Of a Gdementioning

confidence: 99%

Strategies in catalysts and electrolyzer design for electrochemical CO ₂ reduction toward C ₂₊ products

et al. 2020

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“…Results that stand out among the studies of metal nanoparticles supported on carbon nanotube catalysts are presented in the work of Ma et al [77]. The authors investigated MWCNTs containing Ag nanoparticles in an optimized flow system.…”

Section: Carbon Nanotubesmentioning

confidence: 99%

“…However, it is evident, that these materials show the promise of surpassing the performance of state-of-the-art electrodes containing carbon black. This promise has already started to materialize in the work of Ma et al, whereby current densities higher than 300 mA cm −2 and energy efficiencies of 45% were achieved in a more optimized system [77]. This demonstrates that whole systems need to be studied and not only half cells, as well as the numerous parameters, which influence CO 2 electro-reduction, and in particular, electrolyser design must be optimized.…”

Section: Conclusion and Future Prospectsmentioning

confidence: 99%

Carbon Materials as Cathode Constituents for Electrochemical CO2 Reduction—A Review

Messias

Ponte

Machado

2019

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This work reviews the latest developments of cathodes for electrochemical CO 2 reduction, with carbon black, mesoporous carbons, carbon nanofibers, graphene, its derivatives and/or carbon nanotubes as constituents. Electrochemical CO 2 reduction into fuels and chemicals powered by renewable energy is a technology that can contribute to climate change mitigation. Strategies used in this fast-evolving field are discussed, having in mind a commercial application. Electrochemical performance of several materials is analyzed, using in some cases the findings of theoretical computational studies, which show the enormous potential of these materials. Considerable challenges still lie ahead to bring this technology into industrial deployment. However, the significant progress achieved so far shows that further R&D efforts might pay off.C 2019, 5, 83 2 of 26 considering the findings of theoretical computational studies, are in some cases analyzed, when this type of study is available. Knowledge gaps and new promising R&D trends of nanocarbon-based materials development for this application are highlighted. Carbon BlackCarbon black is produced by the incomplete combustion of petroleum heavy fractions. It is a form of para-crystalline carbon of high surface area. Although activated carbon has a more favorable surface area to volume ratio (>1000 m 2 /g) than carbon black, its low electrical conductivity makes it unsuitable as electrode material. Commercial carbon blacks, such as Vulcan or Ketjen black have been most frequently used as support to ensure large electrochemical reaction surfaces and to reduce noble metal loading. Metal and Metal-Derived Particles Supported on Carbon BlackCO 2 ER can be carried out in gas phase, where gaseous CO 2 is fed to the cathode through gas diffusion electrodes (GDE), or in liquid phase, where CO 2 dissolved in the liquid electrolyte contacts the electrode. Figure 1 presents a schematic diagram of two possible configurations of both operation modes.C 2019, 5, x FOR PEER REVIEW 2 of 25 discussed, having in mind a commercial application. Electrochemical performances of several materials, considering the findings of theoretical computational studies, are in some cases analyzed, when this type of study is available. Knowledge gaps and new promising R&D trends of nanocarbonbased materials development for this application are highlighted. Carbon BlackCarbon black is produced by the incomplete combustion of petroleum heavy fractions. It is a form of para-crystalline carbon of high surface area. Although activated carbon has a more favorable surface area to volume ratio (>1000 m 2 /g) than carbon black, its low electrical conductivity makes it unsuitable as electrode material. Commercial carbon blacks, such as Vulcan or Ketjen black have been most frequently used as support to ensure large electrochemical reaction surfaces and to reduce noble metal loading. Metal and Metal-Derived Particles Supported on Carbon BlackCO2ER can be carried out in gas phase, where gaseous CO2 is fed to the cathode thro...

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“…have reported high electrocatalytic conversion of CO 2 to hydrocarbon fuels over Cu NPs supported over defective graphene nanosheets . However, for several other metallic nanoparticles, for example, Ag NPs impregnated over multi‐walled carbon nanotubes or Bi NPs stabilized in ionic liquids, this electrocatalytic reduction of CO 2 can selectively yield CO. In this context Rybchenco et al.…”

Section: Co2 Fixation Reactionsmentioning

confidence: 99%

“…In this context Mayer et al have reported aC uPd nanoalloy decorated over an organic polymerf or electrocatalytic reduction of CO 2 to CH 4 , [102] in which the synergistic reactivity interplayed by the PdÀHa nd CuÀCO sites controlled the catalytic activity.L im et al have re-portedh igh electrocatalytic conversion of CO 2 to hydrocarbon fuels over Cu NPss upported over defective graphene nanosheets. [103] However,f or severalo ther metallic nanoparticles, for example, Ag NPs impregnated over multi-walled carbonn anotubes [104] or Bi NPs stabilized in ionic liquids, [105] this electrocatalytic reduction of CO 2 can selectively yield CO. In this context Rybchenco et al have observed very high faradaice fficiency for methanols ynthesis from ap yridine-containing aqueous electrolyte under high CO 2 pressure over aP te lectrode.…”

Section: Eelectrocatalytic Reductiono Fc Omentioning

confidence: 99%

Supported Porous Nanomaterials as Efficient Heterogeneous Catalysts for CO₂ Fixation Reactions

Bhanja

Modak

Bhaumik

2018

Chemistry A European J

109

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CO is a major greenhouse gas responsible for global warming and can act as an abundant and inexpensive C1 source for enhancing the chain length/functionalization of a wide range of reactive organic molecules. It is moderately reactive, nontoxic and renewable. Thus, CO fixation reactions are important to meet the global challenges, that is, to mitigate the concentration of CO in the atmosphere through its fruitful utilization, which is of great interest from economic and environmental perspectives. Various metallic nanoparticles as well as metal oxides can be supported over high surface area porous materials and the resulting nanomaterial can act as heterogeneous and reusable solid catalyst for CO fixation reactions for the synthesis of a large number of fuels, natural products agrochemicals, and pharmaceutical compounds. Here we present an overview of the recent progress as well as promising future of metal/metal oxide nanoparticles supported over porous nanomaterials as heterogeneous catalysts for a wide spectrum of these CO fixation reactions.

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Carbon nanotube containing Ag catalyst layers for efficient and selective reduction of carbon dioxide

Abstract: The incorporation of MWCNT in the Ag electrode catalyst layer improves charge transfer within the catalyst layer, therefore significantly enhancing catalyst utilization for the electroreduction of CO2to CO.

Cited by 176 publications

References 34 publications

Strategies in catalysts and electrolyzer design for electrochemical CO ₂ reduction toward C ₂₊ products

Strategies in catalysts and electrolyzer design for electrochemical CO ₂ reduction toward C ₂₊ products

Carbon Materials as Cathode Constituents for Electrochemical CO2 Reduction—A Review

Supported Porous Nanomaterials as Efficient Heterogeneous Catalysts for CO₂ Fixation Reactions

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Carbon nanotube containing Ag catalyst layers for efficient and selective reduction of carbon dioxide

Abstract: The incorporation of MWCNT in the Ag electrode catalyst layer improves charge transfer within the catalyst layer, therefore significantly enhancing catalyst utilization for the electroreduction of CO2to CO.

Cited by 176 publications

References 34 publications

Strategies in catalysts and electrolyzer design for electrochemical CO 2 reduction toward C 2+ products

Strategies in catalysts and electrolyzer design for electrochemical CO 2 reduction toward C 2+ products

Carbon Materials as Cathode Constituents for Electrochemical CO2 Reduction—A Review

Supported Porous Nanomaterials as Efficient Heterogeneous Catalysts for CO2 Fixation Reactions

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Product

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Strategies in catalysts and electrolyzer design for electrochemical CO ₂ reduction toward C ₂₊ products

Strategies in catalysts and electrolyzer design for electrochemical CO ₂ reduction toward C ₂₊ products

Supported Porous Nanomaterials as Efficient Heterogeneous Catalysts for CO₂ Fixation Reactions