Electrocatalytic Reduction of CO2 to Ethylene by Molecular Cu-Complex Immobilized on Graphitized Mesoporous Carbon: Difference between revisions
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===Abstract=== | ===Abstract=== | ||
====Summary==== | ====Summary==== | ||
The study shows that a dinuclear molecular copper complex immobilized on graphitized mesoporous carbon catalyzes the electrochemical conversion of CO₂ to hydrocarbons (methane and ethylene) with total Faradaic efficiencies of up to 60%. In 0.1 M KCl, a high selectivity toward C₂ products is achieved, with a Faradaic efficiency of 40%. The influence of local pH, pore structure, and the carbon support on mass transport and the formation of highly reduced products is demonstrated. Although spectroscopy after 2 h of bulk electrolysis indicates that the molecular complex is still present, morphological analysis reveals that newly formed copper clusters act as the actual active sites during catalysis. | The study shows that a dinuclear molecular copper complex immobilized on graphitized mesoporous carbon catalyzes the electrochemical conversion of CO₂ to hydrocarbons (methane and ethylene) with total Faradaic efficiencies of up to 60%. In 0.1 M KCl, a high selectivity toward C₂ products is achieved, with a Faradaic efficiency of 40%. The influence of local pH, pore structure, and the carbon support on mass transport and the formation of highly reduced products is demonstrated. Although spectroscopy after 2 h of bulk electrolysis indicates that the molecular complex is still present, morphological analysis reveals that newly formed copper clusters act as the actual active sites during catalysis. | ||
====Advances and special progress==== | ====Advances and special progress==== | ||
| Line 16: | Line 16: | ||
==== Catalyst ==== | ==== Catalyst ==== | ||
<chemform smiles="[Cu+]123(~N4=C(CN~1(CC1NC5C(N=1~2)=CC=CC=5)CC1NC2C(N=1~3)=CC=CC=2)NC1C4=CC=CC=1)1~[Cl-]~[Cu+]234(~N(CC5NC6C(N=5~2)=CC=CC=6)(CC2NC5C(N=2~3)=CC=CC=5)CC2NC3C(N=2~4)=CC=CC=3)~[Cl-]~1" inchi="1S/2C24H21N7.2ClH.2Cu/c2*1-2-8-17-16(7-1)25-22(26-17)13-31(14-23-27-18-9-3-4-10-19(18)28-23)15-24-29-20-11-5-6-12-21(20)30-24;;;;/h2*1-12H,13-15H2,(H,25,26)(H,27,28)(H,29,30);2*1H;;/q;;;;2*+ | <chemform smiles="[Cu+2]123(~N4=C(CN~1(CC1NC5C(N=1~2)=CC=CC=5)CC1NC2C(N=1~3)=CC=CC=2)NC1C4=CC=CC=1)1~[Cl-]~[Cu+2]234(~N(CC5NC6C(N=5~2)=CC=CC=6)(CC2NC5C(N=2~3)=CC=CC=5)CC2NC3C(N=2~4)=CC=CC=3)~[Cl-]~1" inchikey="LJMJPPDEGWBXNM-UHFFFAOYSA-L" inchi="1S/2C24H21N7.2ClH.2Cu/c2*1-2-8-17-16(7-1)25-22(26-17)13-31(14-23-27-18-9-3-4-10-19(18)28-23)15-24-29-20-11-5-6-12-21(20)30-24;;;;/h2*1-12H,13-15H2,(H,25,26)(H,27,28)(H,29,30);2*1H;;/q;;;;2*+2/p-2" float="none" width="200" height="200"> | ||
-INDIGO- | -INDIGO-04012615392D | ||
0 0 0 0 0 0 0 0 0 0 0 V3000 | 0 0 0 0 0 0 0 0 0 0 0 V3000 | ||
| Line 23: | Line 23: | ||
M V30 COUNTS 66 84 0 0 0 | M V30 COUNTS 66 84 0 0 0 | ||
M V30 BEGIN ATOM | M V30 BEGIN ATOM | ||
M V30 1 Cu 5.75017 -3.57471 0.0 0 CHG= | M V30 1 Cu 5.75017 -3.57471 0.0 0 CHG=2 | ||
M V30 2 Cu 9.59598 -3.57471 0.0 0 CHG= | M V30 2 Cu 9.59598 -3.57471 0.0 0 CHG=2 | ||
M V30 3 Cl 8.06512 -2.51083 0.0 0 CHG=-1 | M V30 3 Cl 8.06512 -2.51083 0.0 0 CHG=-1 | ||
M V30 4 Cl 7.24369 -4.63909 0.0 0 CHG=-1 | M V30 4 Cl 7.24369 -4.63909 0.0 0 CHG=-1 | ||
| Line 181: | Line 181: | ||
====Investigation==== | ====Investigation==== | ||
{{#experimentlist:|form=EC_conversion_of_CO2_experiments|name=Bulk Electrolysis|importFile=|description=}} | |||
{{#experimentlist:|form=EC_conversion_of_CO2_experiments|name=Bulk | |||
{{Tags | {{Tags | ||
|tags=electrochemical | |tags=electrochemical CO₂ reduction, dinuclear copper complex, molecular catalyst, copper clusters, graphitized mesoporous carbon support, catalyst immobilization, methane production, ethylene production, C₂ product selectivity, Faradaic efficiency, local pH effects, mass transport, catalyst restructuring, bulk electrolysis, spectroscopy analysis, morphology characterization | ||
}} | }} | ||
[[Category:Homogeneous electrochemical CO2 conversion]] | [[Category:Homogeneous electrochemical CO2 conversion]] | ||
[[Category:Publication]] | [[Category:Publication]] | ||
Latest revision as of 16:48, 1 April 2026
Abstract[edit | edit source]
Summary[edit | edit source]
The study shows that a dinuclear molecular copper complex immobilized on graphitized mesoporous carbon catalyzes the electrochemical conversion of CO₂ to hydrocarbons (methane and ethylene) with total Faradaic efficiencies of up to 60%. In 0.1 M KCl, a high selectivity toward C₂ products is achieved, with a Faradaic efficiency of 40%. The influence of local pH, pore structure, and the carbon support on mass transport and the formation of highly reduced products is demonstrated. Although spectroscopy after 2 h of bulk electrolysis indicates that the molecular complex is still present, morphological analysis reveals that newly formed copper clusters act as the actual active sites during catalysis.
Advances and special progress[edit | edit source]
Text
Additional remarks[edit | edit source]
Text
Content of the published article in detail[edit | edit source]
Catalyst[edit | edit source]
Investigation[edit | edit source]
| Experiment type | Catalytic information | Working electrode | Counter electrode | Reaction parameters | Catalytic performance | ||||||||||
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Investigation-Name: Bulk Electrolysis
electrochemical CO₂ reduction, dinuclear copper complex, molecular catalyst, copper clusters, graphitized mesoporous carbon support, catalyst immobilization, methane production, ethylene production, C₂ product selectivity, Faradaic efficiency, local pH effects, mass transport, catalyst restructuring, bulk electrolysis, spectroscopy analysis, morphology characterization
