Journal ArticleDOI
CO2 electroreduction to ethylene via hydroxide-mediated copper catalysis at an abrupt interface
Cao-Thang Dinh,Thomas Burdyny,Golam Kibria,Ali Seifitokaldani,Christine M. Gabardo,F. Pelayo García de Arquer,Amirreza Kiani,Jonathan P. Edwards,Phil De Luna,Oleksandr S. Bushuyev,Chengqin Zou,Chengqin Zou,Rafael Quintero-Bermudez,Yuanjie Pang,David Sinton,Edward H. Sargent +15 more
TLDR
A copper electrocatalyst at an abrupt reaction interface in an alkaline electrolyte reduces CO2 to ethylene with 70% faradaic efficiency at a potential of −0.55 volts versus a reversible hydrogen electrode (RHE).Abstract:
Carbon dioxide (CO 2 ) electroreduction could provide a useful source of ethylene, but low conversion efficiency, low production rates, and low catalyst stability limit current systems. Here we report that a copper electrocatalyst at an abrupt reaction interface in an alkaline electrolyte reduces CO 2 to ethylene with 70% faradaic efficiency at a potential of −0.55 volts versus a reversible hydrogen electrode (RHE). Hydroxide ions on or near the copper surface lower the CO 2 reduction and carbon monoxide (CO)–CO coupling activation energy barriers; as a result, onset of ethylene evolution at −0.165 volts versus an RHE in 10 molar potassium hydroxide occurs almost simultaneously with CO production. Operational stability was enhanced via the introduction of a polymer-based gas diffusion layer that sandwiches the reaction interface between separate hydrophobic and conductive supports, providing constant ethylene selectivity for an initial 150 operating hours.read more
Citations
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Journal ArticleDOI
Selective n-propanol formation from CO2 over degradation-resistant activated PdCu alloy foam electrocatalysts
Motiar Rahaman,Kiran Kiran,Ivan Zelocualtecatl Montiel,Vitali Grozovski,Abhijit Dutta,Peter Broekmann +5 more
TL;DR: In this paper, a foam-type, high surface area electrocatalyst for the CO2 reduction reaction (CO2RR) was presented, which is not only highly selective toward n-propanol (PrOH) formation (FEPrOH = 13.7%, jPrOH= −1.15 mA cm−2) at relatively low overpotentials (−0.65 V vs. RHE) but also demonstrates an excellent long-term stability during CO2 electrolysis experiments of 102 h in duration.
Journal ArticleDOI
Molybdenum-based heterogeneous catalysts for the control of environmental pollutants
Journal ArticleDOI
MOF-derived Cu@Cu2O heterogeneous electrocatalyst with moderate intermediates adsorption for highly selective reduction of CO2 to methanol
TL;DR: In this paper , a novel MOF-derived Cu@Cu 2 O heterogeneous electrocatalyst with moderate intermediates adsorption was proposed for highly selective reduction of CO 2 to methanol.
Journal ArticleDOI
Amine-Functionalized Carbon Nanodot Electrocatalysts Converting Carbon Dioxide to Methane
Ram Manohar Yadav,Ram Manohar Yadav,Zhengyuan Li,Tianyu Zhang,Onur Sahin,Soumyabrata Roy,Guanhui Gao,Huazhang Guo,Robert Vajtai,Liang Wang,Liang Wang,Pulickel M. Ajayan,Jingjie Wu +12 more
TL;DR: In this paper, a molecular tuning strategy was proposed for amine functionalization of nitrogen-doped graphene quantum dots (GQDs) for highly efficient CO2-to-CH4 conversion.
Journal ArticleDOI
Surface plasmon resonance and defects on tungsten oxides synergistically boost high-selective CO2 reduction for ethylene
TL;DR: In this article, plasmonic tungsten oxides (WO3-x-2) were used as catalysts for high-selective ethylene production via photocatalytic CO2 reduction reaction driven by solar energy.
References
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