Enhanced Charge Transfer Kinetics for the Electroreduction of Carbon Dioxide on Silver Electrodes Functionalized with Cationic Surfactants

Teh, Wei Jie; Kolb, Manuel J.; Calle‐Vallejo, Federico; Yeo, Boon Siang

doi:10.1002/adfm.202210617

Cited by 11 publications

(9 citation statements)

References 45 publications

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“…Similarly, Ag catalysts with well-designed morphologies have also been reported to improve the catalytic activity for CO selection, such as 3D porous Ag nanostructures . Moreover, the use of cationic surfactants has been shown to be effective in increasing the CO 2 reduction reaction rate on Ag catalysts for up to 12-fold . Nonetheless, solid state electrocatalysts remain limited in further improvements in selectivity and efficiency for CO 2 reduction to CO.…”

Section: Main Carbon Dioxide Conversion Productsmentioning

confidence: 99%

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Perspectives on Advancing Sustainable CO₂ Conversion Processes: Trinomial Technology, Environment, and Economy

Vega,

Bahamon,

Alkhatib

2024

ACS Sustainable Chem. Eng.

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CO 2 can be converted into value-added products such as fuels, chemicals, and building materials, adding an economic incentive for CO 2 capture and green economy, while also reducing the environmental footprint of hard-to-abate industries such as aviation, construction, and metallurgy. Nonetheless, most available technologies for direct CO 2 conversion, while promising, are still in early development stages, facing technical and economic challenges for their scale-up, questioning their viability to truly instill a timely impact on global CO 2 emissions. Furthermore, a clear environmental benefit should be obtained for the new processes versus the traditional ones they are replacing in the market. In this perspective, we examine the range of available technologies for direct CO 2 conversion using thermal, electrical, and photochemical routes and mineralization including the advancements in their role in synthesizing a range of resulting products from methanol, methane, carbon monoxide, and solid carbonates. We offer insights on the trends in current research and development and the required direction to expedite the technological readiness of attractive CO 2 conversion technologies in terms of catalytic material and reactor design. We also highlight the important role of modeling (molecular and process levels) as an enabling tool to deploy these technologies at the commercial scale originating from understanding their behavior at the molecular level. Lastly, we highlight the significance of carrying out reliable life cycle analysis in identifying the environmental hotspots as well as gaps in the technology that allows improving their environmental footprint and economic attractiveness.

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Section: Main Carbon Dioxide Conversion Productsmentioning

confidence: 99%

“…164 Moreover, the use of cationic surfactants has been shown to be effective in increasing the CO 2 reduction reaction rate on Ag catalysts for up to 12-fold. 165 Nonetheless, solid state electrocatalysts remain limited in further improvements in selectivity and efficiency for CO 2 reduction to CO.…”

Section: ■ Introductionmentioning

confidence: 99%

Perspectives on Advancing Sustainable CO₂ Conversion Processes: Trinomial Technology, Environment, and Economy

Vega,

Bahamon,

Alkhatib

2024

ACS Sustainable Chem. Eng.

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“…Since the electrode-electrolyte interface is the site of CO 2 RR, it is particularly critical to analyze the property of electrical double layer (EDL). 42 The EIS measurements, which are used to probe the double layer charging and electrochemical charge transfer, [43][44][45] were tested to reveal the influence of CTAB at the electrode-electrolyte interface (Figures S16 and S17). Figure 3A shows the Nyquist plots of electrolytes with and without CTAB adding in 0.5 mol L À1 KHCO 3 under CO 2 -saturation.…”

Section: Kinetic Analysis Of Co 2 Rrmentioning

confidence: 99%

Surfactant‐modified electrode–electrolyte interface for steering CO₂ electrolysis on Cu electrodes

Dong,

Ge,

Fan

et al. 2023

AIChE Journal

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Cu‐based catalysts exhibit the unique ability to generate high‐order products from electrochemical CO2 reduction reaction (CO2RR). The performance of electrochemical systems is jointly influenced by the catalysts and local microenvironment of the electrode–electrolyte interface. Here, Cu nanowires as a model catalyst, in combination with cetyl trimethyl ammonium bromide (CTAB) as electrolyte additives, are designed to steer CO2RR. By using the Cu rotating disc electrode and in situ vibrational spectroscopy, it is revealed that the hydrophobic interface microenvironment is built, and the interaction of interfacial water and surface‐adsorbed CO is disrupted by CTAB, which dramatically improve formate selectivity (from 5% to 63%) with a high partial current density of formate (13‐fold increase) at −1.0 V vs. reversible hydrogen electrode. The understanding of the surfactant‐modified electrode–electrolyte interface established here offers a distinct perspective to control the microenvironment on promoting electrosynthesis performance.

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“…Previous reports have shown that on Ag electrodes, larger cations promoted CO production over H 2 production 53 and increased the current density due to formation of CO and HCOO − . 54,55 On Cu electrodes, *K and *I modify the adsorption energies of *CO and its first hydrogenation products, 56 and increasing cation size also favors CO 2 reduction over H 2 evolution as well as promoting C 2 products rather than C 1 . 57 DFT calculations have provided an explanation by showing that larger cations provide greater stabilization to C 2 intermediates.…”

Section: Introductionmentioning

confidence: 99%

Cation Effects on the Adsorbed Intermediates of CO₂ Electroreduction Are Systematic and Predictable

Sargeant,

Rodriguez,

Calle-Vallejo

2024

ACS Catal.

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The electrode–electrolyte interface, and in particular the nature of the cation, has considerable effects on the activity and product selectivity of the electrochemical reduction of CO2. Therefore, to improve the electrocatalysis of this challenging reaction, it is paramount to ascertain whether cation effects on adsorbed intermediates are systematic. Here, DFT calculations are used to show that the effects of K+, Na+, and Mg2+, on single carbon CO2 reduction intermediates can either be stabilizing or destabilizing depending on the metal and the adsorbate. Because systematic trends are observed, cation effects can be accurately predicted in simple terms for a wide variety of metals, cations and adsorbed species. These results are then applied to the reduction of CO2 to CO on four different catalytic surfaces (Au, Ag, Cu, Pd) and activation of weak-binding metals is consistently observed by virtue of the stabilization of the key intermediate *COOH.

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Enhanced Charge Transfer Kinetics for the Electroreduction of Carbon Dioxide on Silver Electrodes Functionalized with Cationic Surfactants

Cited by 11 publications

References 45 publications

Perspectives on Advancing Sustainable CO₂ Conversion Processes: Trinomial Technology, Environment, and Economy

Perspectives on Advancing Sustainable CO₂ Conversion Processes: Trinomial Technology, Environment, and Economy

Surfactant‐modified electrode–electrolyte interface for steering CO₂ electrolysis on Cu electrodes

Cation Effects on the Adsorbed Intermediates of CO₂ Electroreduction Are Systematic and Predictable

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Enhanced Charge Transfer Kinetics for the Electroreduction of Carbon Dioxide on Silver Electrodes Functionalized with Cationic Surfactants

Cited by 11 publications

References 45 publications

Perspectives on Advancing Sustainable CO2 Conversion Processes: Trinomial Technology, Environment, and Economy

Perspectives on Advancing Sustainable CO2 Conversion Processes: Trinomial Technology, Environment, and Economy

Surfactant‐modified electrode–electrolyte interface for steering CO2 electrolysis on Cu electrodes

Cation Effects on the Adsorbed Intermediates of CO2 Electroreduction Are Systematic and Predictable

Contact Info

Product

Resources

About

Perspectives on Advancing Sustainable CO₂ Conversion Processes: Trinomial Technology, Environment, and Economy

Perspectives on Advancing Sustainable CO₂ Conversion Processes: Trinomial Technology, Environment, and Economy

Surfactant‐modified electrode–electrolyte interface for steering CO₂ electrolysis on Cu electrodes

Cation Effects on the Adsorbed Intermediates of CO₂ Electroreduction Are Systematic and Predictable