Copper–Silver Bimetallic Nanowire Arrays for Electrochemical Reduction of Carbon Dioxide

Wang, Yuanxing; Niu, Cailing; Zhu, Yachuan

doi:10.3390/nano9020173

Cited by 29 publications

(17 citation statements)

References 40 publications

(44 reference statements)

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“…The potentiostat was compensated with 85% of iR values. 31 The electrolyte was purged with CO 2 at a rate of 30 sccm for 15 min, for the saturation of CO 2 in the electrolyte. After CO 2 saturation, the pH of the electrolyte was 6.8.…”

Section: Methodsmentioning

confidence: 99%

Tunable Syngas Formation from Electrochemical CO₂ Reduction on Copper Nanowire Arrays

Wang

Niu

Zhu

et al. 2020

ACS Appl. Energy Mater.

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Producing syngas from electrochemical reduction of CO 2 by renewable energy offers an opportunity to reduce CO 2 emissions and provide chemicals and fuels. Herein, we report the careful manipulation of the reduction treatment to synthesize copper nanowire arrays (Cu NAs). By thermal oxidation, copper oxide nanowires were grown on a Cu mesh. Then, thermal reduction and electrochemical reduction were used to reduce copper oxide to Cu with the morphologic features largely preserved. The derived Cu NAs are cost-effective electrocatalysts capable of reducing CO 2 and H 2 O for tunable syngas production. It is demonstrated that syngas, the mixture of H 2 and CO, could be attained with a wide range of compositions (from 1:2 to 3:1) from CO 2 reduction and H 2 O reduction on these Cu NAs in aqueous solutions. In addition, Cu NAs show a high current density, 4 mA/cm 2 , at a low potential, −0.5 V, with a high syngas faradaic efficiency of over 70%. This approach explores a new method that sheds light on tuning the syngas composition from the electrochemical CO 2 reduction by Cu-based catalysts.

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Section: Methodsmentioning

confidence: 99%

Tunable Syngas Formation from Electrochemical CO₂ Reduction on Copper Nanowire Arrays

Wang

Niu

Zhu

et al. 2020

ACS Appl. Energy Mater.

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“…The cyclic voltammetry (CV) and LSV experiments were performed in 0.5 M potassium bicarbonate (KHCO 3 ). All the electrochemical measurements were normalized to the RHE by using the following formula:

where

[ 17 ].…”

Section: Methodsmentioning

confidence: 99%

“…[ 9 , 10 , 11 , 12 , 13 , 14 ], bi-metallic (Cu-Zn, Cu-Ag, Cu-Sn, etc.) [ 15 , 16 , 17 , 18 ], oxides (CuOx, CuO-ZnO, etc.) [ 19 , 20 ], metal-organic frameworks [ 21 , 22 , 23 , 24 ], and zeolites [ 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Reduction of CO2 to C1 and C2 Liquid Products on Copper-Decorated Nitrogen-Doped Carbon Nanosheets

2022

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Due to the significant rise in atmospheric carbon dioxide (CO2) concentration and its detrimental environmental effects, the electrochemical CO2 conversion to valuable liquid products has received great interest. In this work, the copper-melamine complex was used to synthesize copper-based electrocatalysts comprising copper nanoparticles decorating thin layers of nitrogen-doped carbon nanosheets (Cu/NC). The as-prepared electrocatalysts were characterized by XRD, SEM, EDX, and TEM and investigated in the electrochemical CO2 reduction reaction (ECO2RR) to useful liquid products. The electrochemical CO2 reduction reaction was carried out in two compartments of an electrochemical H-Cell, using 0.5 M potassium bicarbonate (KHCO3) as an electrolyte; nuclear magnetic resonance (1H NMR) was used to analyze and quantify the liquid products. The electrode prepared at 700 °C (Cu/NC-700) exhibited the best dispersion for the copper nanoparticles on the carbon nanosheets (compared to Cu/NC-600 & Cu/NC-800), highest current density, highest electrochemical surface area, highest electrical conductivity, and excellent stability and faradic efficiency (FE) towards overall liquid products of 56.9% for formate and acetate at the potential of −0.8V vs. Reversible Hydrogen Electrode (RHE).

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“…The Cu-Ag alloy was also used by Wang et al 115 Wang et al 116 synthesized Cu-Ag bimetallic nanowire arrays as catalysts in three steps. First, thermal oxidation was used in ambient air to grow CuO/Cu 2 O nanowires on copper mesh.…”

Section: Cu-zn Bimetallic Materialsmentioning

confidence: 99%

Current state of copper-based bimetallic materials for electrochemical CO₂ reduction: a review

et al. 2022

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Copper–Silver Bimetallic Nanowire Arrays for Electrochemical Reduction of Carbon Dioxide

Cited by 29 publications

References 40 publications

Tunable Syngas Formation from Electrochemical CO₂ Reduction on Copper Nanowire Arrays

Tunable Syngas Formation from Electrochemical CO₂ Reduction on Copper Nanowire Arrays

Electrochemical Reduction of CO2 to C1 and C2 Liquid Products on Copper-Decorated Nitrogen-Doped Carbon Nanosheets

Current state of copper-based bimetallic materials for electrochemical CO₂ reduction: a review

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Copper–Silver Bimetallic Nanowire Arrays for Electrochemical Reduction of Carbon Dioxide

Cited by 29 publications

References 40 publications

Tunable Syngas Formation from Electrochemical CO2 Reduction on Copper Nanowire Arrays

Tunable Syngas Formation from Electrochemical CO2 Reduction on Copper Nanowire Arrays

Electrochemical Reduction of CO2 to C1 and C2 Liquid Products on Copper-Decorated Nitrogen-Doped Carbon Nanosheets

Current state of copper-based bimetallic materials for electrochemical CO2 reduction: a review

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Tunable Syngas Formation from Electrochemical CO₂ Reduction on Copper Nanowire Arrays

Tunable Syngas Formation from Electrochemical CO₂ Reduction on Copper Nanowire Arrays

Current state of copper-based bimetallic materials for electrochemical CO₂ reduction: a review