Spectroscopic Observation of Reversible Surface Reconstruction of Copper Electrodes under CO2 Reduction

2017 ◽  
Vol 121 (22) ◽  
pp. 12337-12344 ◽  
Author(s):  
Charuni M. Gunathunge ◽  
Xiang Li ◽  
Jingyi Li ◽  
Robert P. Hicks ◽  
Vincent J. Ovalle ◽  
...  
Keyword(s):  
Surface Reconstruction ◽  
Co2 Reduction ◽  
Spectroscopic Observation ◽  
Copper Electrodes

CO2 Reduction to Propanol by Copper Foams: A Pre- and Post-Catalysis Study

2020 ◽  
Author(s):  
Jennifer A. Rudd ◽  
Ewa Kazimierska ◽  
Louise B. Hamdy ◽  
Odin Bain ◽  
Sunyhik Ahn ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Photoelectron Spectroscopy ◽  
Carbon Capture ◽  
Surface Composition ◽  
Co2 Reduction ◽  
Structural Rearrangement ◽  
Copper Electrode ◽  
Ex Situ ◽  
X Ray ◽  
Copper Electrodes

The utilization of carbon dioxide is a major incentive for the growing field of carbon capture. Carbon dioxide could be an abundant building block to generate higher value products. Herein, we describe the use of porous copper electrodes to catalyze the reduction of carbon dioxide into higher value products such as ethylene, ethanol and, notably, propanol. For <i>n</i>-propanol production, faradaic efficiencies reach 4.93% at -0.83 V <i>vs</i> RHE, with a geometric partial current density of -1.85 mA/cm<sup>2</sup>. We have documented the performance of the catalyst in both pristine and urea-modified foams pre- and post-electrolysis. Before electrolysis, the copper electrode consisted of a mixture of cuboctahedra and dendrites. After 35-minute electrolysis, the cuboctahedra and dendrites have undergone structural rearrangement. Changes in the interaction of urea with the catalyst surface have also been observed. These transformations were characterized <i>ex-situ</i> using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. We found that alterations in the morphology, crystallinity, and surface composition of the catalyst led to the deactivation of the copper foams.

scholarly journals CO2 Reduction to Propanol by Copper Foams: A Pre- and Post-Catalysis Study

2020 ◽  
Author(s):  
Jennifer A. Rudd ◽  
Ewa Kazimierska ◽  
Louise B. Hamdy ◽  
Odin Bain ◽  
Sunyhik Ahn ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Photoelectron Spectroscopy ◽  
Carbon Capture ◽  
Surface Composition ◽  
Co2 Reduction ◽  
Structural Rearrangement ◽  
Copper Electrode ◽  
Ex Situ ◽  
X Ray ◽  
Copper Electrodes

The utilization of carbon dioxide is a major incentive for the growing field of carbon capture. Carbon dioxide could be an abundant building block to generate higher value products. Herein, we describe the use of porous copper electrodes to catalyze the reduction of carbon dioxide into higher value products such as ethylene, ethanol and, notably, propanol. For <i>n</i>-propanol production, faradaic efficiencies reach 4.93% at -0.83 V <i>vs</i> RHE, with a geometric partial current density of -1.85 mA/cm<sup>2</sup>. We have documented the performance of the catalyst in both pristine and urea-modified foams pre- and post-electrolysis. Before electrolysis, the copper electrode consisted of a mixture of cuboctahedra and dendrites. After 35-minute electrolysis, the cuboctahedra and dendrites have undergone structural rearrangement. Changes in the interaction of urea with the catalyst surface have also been observed. These transformations were characterized <i>ex-situ</i> using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. We found that alterations in the morphology, crystallinity, and surface composition of the catalyst led to the deactivation of the copper foams.

Formation of C–C bonds during electrocatalytic CO2 reduction on non-copper electrodes

2020 ◽  
Vol 8 (44) ◽  
pp. 23162-23186
Author(s):  
Yansong Zhou ◽  
Boon Siang Yeo
Keyword(s):  
Electrochemical Reduction ◽  
Bond Formation ◽  
Co2 Reduction ◽  
Formation Mechanisms ◽  
Copper Electrodes ◽  
Recent Advances ◽  
Cu Catalysts

Recent advances in non-Cu catalysts for electrochemical reduction of CO2 to multi-carbon products are summarized, focusing on C–C bond formation mechanisms.

Theoretical understanding of the electrochemical reaction barrier: a kinetic study of CO2 reduction reaction on copper electrodes

2020 ◽  
Vol 22 (17) ◽  
pp. 9607-9615 ◽  
Author(s):  
Shu-Ting Gao ◽  
Shi-Qin Xiang ◽  
Jun-Lin Shi ◽  
Wei Zhang ◽  
Liu-Bin Zhao
Keyword(s):  
Renewable Energy ◽  
Kinetic Study ◽  
Electrochemical Reduction ◽  
Electrochemical Reaction ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
Theoretical Understanding ◽  
Copper Electrodes ◽  
Chemical Products ◽  
Co2 Reduction Reaction

The electrochemical reduction of CO2 is a promising route for converting intermittent renewable energy into storable fuels and useful chemical products.

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