Intermetallic CuAu nanoalloy for stable electrochemical CO2 reduction

Kuang, Siyu; Li, Minglu; Chen, Xiaoyi; Chi, Haoyuan; Lin, Jianlong; Hu, Zheng; Hu, Shengsun; Zhang, Sheng; Ma, Xinbin

doi:10.1016/j.cclet.2022.108013

Cited by 11 publications

(5 citation statements)

References 35 publications

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“…As shown in Figure S4b, the vibration bands at approximately 1255 cm À 1 and 1515 cm À 1 are assigned to the characteristic vibration adsorption of CO 2 *À and *OCCO on Cu nanoparticles, respectively, which is aligned with the mechanisms of single electron pre-equilibrium on Cu nanoparticles. [25,26] Two CO 2 *À radicals combine to generate OOCÀ COO (oxalate) and then further reduced to *OCCO. As shown in Figure S5, symmetric CO 2 stretch (1350 cm À 1 ) was detected under CO 2 as carbon source, which proved that oxalate is the key intermediate of CO 2 reaction process.…”

Section: Resultsmentioning

confidence: 99%

Acetamide Electrosynthesis from CO₂ and Nitrite in Water

Kuang,

Xiao,

Chi

et al. 2024

Angew Chem Int Ed

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Renewable electricities driven electrocatalytic CO2 reduction reaction (CO2RR) is a promising solution to carbon neutralization, which mainly generate simple carbon products. It is of great importance to produce more valuable C‐N chemicals from CO2 and nitrogen species. However, it is challenging to co‐reduce CO2 and NO3‐/NO2‐ to generate aldoxime an important intermediate in the electrocatalytic C‐N coupling process. Herein, we report the successful electrochemical conversion of CO2 and NO2‐ to acetamide for the first time over copper catalysts under alkaline condition through a gas diffusion electrode. Operando spectroelectrochemical characterizations and DFT calculations, suggest acetaldehyde and hydroxylamine identified as key intermediates undergo a nucleophilic addition reaction to produce acetaldoxime, which is then dehydrated to acetonitrile and followed by hydrolysis to give acetamide under highly local alkaline environment and electric field. Moreover, the above mechanism was successfully extended to the formation of phenylacetamide. This study provides a new strategy to synthesize highly valued amides from CO2 and wastewater.

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Section: Resultsmentioning

confidence: 99%

Acetamide Electrosynthesis from CO₂ and Nitrite in Water

Kuang,

Xiao,

Chi

et al. 2024

Angew Chem Int Ed

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“…Among the Cu–M bimetallic catalysts (where M = Ag, Au, , Zn, Pd, etc. ), Ag and Au metals are promising candidates for oxygenate conversion due to their weak H and O affinity. , For example, Cu 3 Au showed a high FE ethanol of over 29%, possibly attributed to the tuned d-band center below the Fermi-level energy (Figure C) . The changed electronic structure originated from lattice disorder by introducing Au and induced a shorter C–O length of intermediates than pure Cu, thus leading to a high ethanol conversion over ethylene through a higher energy barrier for breaking C–O bonds.…”

Section: Electrocatalystsmentioning

confidence: 99%

Multiscale CO₂ Electrocatalysis to C₂₊ Products: Reaction Mechanisms, Catalyst Design, and Device Fabrication

Yan,

Chen,

Kumari

et al. 2023

Chem. Rev.

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Electrosynthesis of value-added chemicals, directly from CO 2 , could foster achievement of carbon neutral through an alternative electrical approach to the energyintensive thermochemical industry for carbon utilization. Progress in this area, based on electrogeneration of multicarbon products through CO 2 electroreduction, however, lags far behind that for C 1 products. Reaction routes are complicated and kinetics are slow with scale up to the high levels required for commercialization, posing significant problems. In this review, we identify and summarize state-of-art progress in multicarbon synthesis with a multiscale perspective and discuss current hurdles to be resolved for multicarbon generation from CO 2 reduction including atomistic mechanisms, nanoscale electrocatalysts, microscale electrodes, and macroscale electrolyzers with guidelines for future research. The review ends with a cross-scale perspective that links discrepancies between different approaches with extensions to performance and stability issues that arise from extensions to an industrial environment.

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“… 1 , 2 , 3 , 4 Since the 1980s, electrocatalysts for CO 2 electrochemical reduction have undergone rapid development in terms of morphology and composition, which created favorable electronic structures to maintain high selectivity and activity. 5 , 6 , 7 , 8 , 9 , 10 , 11 Tailoring microenvironment at solid-liquid interface has emerged in recent years toward a full optimization of the electrochemical systems, going beyond the catalyst’s electronic structure. However, it is still challenging to completely comprehend the local reaction environment in such electrocatalytic systems.…”

Section: Introductionmentioning

confidence: 99%

Boosting CO2 electrocatalysis through electrical double layer regulations

Fan,

Bao,

Liu

et al. 2024

iScience

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Intermetallic CuAu nanoalloy for stable electrochemical CO2 reduction

Cited by 11 publications

References 35 publications

Acetamide Electrosynthesis from CO₂ and Nitrite in Water

Acetamide Electrosynthesis from CO₂ and Nitrite in Water

Multiscale CO₂ Electrocatalysis to C₂₊ Products: Reaction Mechanisms, Catalyst Design, and Device Fabrication

Boosting CO2 electrocatalysis through electrical double layer regulations

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Intermetallic CuAu nanoalloy for stable electrochemical CO2 reduction

Cited by 11 publications

References 35 publications

Acetamide Electrosynthesis from CO2 and Nitrite in Water

Acetamide Electrosynthesis from CO2 and Nitrite in Water

Multiscale CO2 Electrocatalysis to C2+ Products: Reaction Mechanisms, Catalyst Design, and Device Fabrication

Boosting CO2 electrocatalysis through electrical double layer regulations

Contact Info

Product

Resources

About

Acetamide Electrosynthesis from CO₂ and Nitrite in Water

Acetamide Electrosynthesis from CO₂ and Nitrite in Water

Multiscale CO₂ Electrocatalysis to C₂₊ Products: Reaction Mechanisms, Catalyst Design, and Device Fabrication