Operando‐Untersuchung von Ag‐dekorierten Cu<sub>2</sub>O‐Nanowürfel‐Katalysatoren mit verbesserter CO<sub>2</sub>‐Elektroreduktion zu Flüssigprodukten

Herzog, Antonia; Bergmann, Arno; Jeon, Hyo Sang; Timoshenko, Janis; Kühl, Stefanie; Rettenmaier, Clara; Luna, Mauricio López; Haase, Felix T.; Cuenya, Beatriz Roldán

doi:10.1002/ange.202017070

Cited by 10 publications

(2 citation statements)

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“…For the four different catalytic systems under investigation (derived from the pure and Zn-decorated Cu2O NCs with 4, 7 and 15% Zn in as-prepared state), we compared the product distribution after applying CO2RR conditions for 60 minutes at high current densities, namely -500 mA/cm² (Figure 2a) and -250 mA/cm² (Figure S3). In agreement with our previous study on Cu2O-derived catalysts, 8,10,25 the pure Cu2O-derived catalysts show excellent activity and selectivity for the conversion of CO2 to hydrocarbons and oxygenates, with a relatively low FE for the parasitic HER (FE = ca. 13-16%), Figure 2.…”

Section: B) Co2rr Selectivity For Pristine and Zn-decorated Cu2o Ncs ...supporting

confidence: 91%

“…9 A common route to further tune the product selectivity of Cu-based catalysts is the combination of copper with a secondary metal. Here, a popular option is to use a metal that can efficiently convert CO2 into CO (e.g., Ag, 10 Au 11,12 or Zn [13][14][15][16] ). Zn is of special interest for the development of practical bimetallic CO2RR catalysts, since it is abundant and inexpensive compared to Ag and Au.…”

Section: Introductionmentioning

confidence: 99%

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Tracking heterogeneous structural motifs and the redox behaviour of copper–zinc nanocatalysts for the electrocatalytic CO₂ reduction using operando time resolved spectroscopy and machine learning

Rüscher

Herzog

Timoshenko

et al. 2022

Catal. Sci. Technol.

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Section: B) Co2rr Selectivity For Pristine and Zn-decorated Cu2o Ncs ...supporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Tracking heterogeneous structural motifs and the redox behaviour of copper–zinc nanocatalysts for the electrocatalytic CO₂ reduction using operando time resolved spectroscopy and machine learning

Rüscher

Herzog

Timoshenko

et al. 2022

Catal. Sci. Technol.

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Highly Efficient Electrocatalytic CO₂ Reduction to C₂₊ Products on a Poly(ionic liquid)‐Based Cu⁰–Cu^I Tandem Catalyst

Duan

et al. 2022

Angewandte Chemie

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Electroreduction of CO2 on a polymer‐modified Cu‐based catalyst has shown high multi‐electron reduction (>2 e−) selectivity, however, most of the corresponding current densities are still too small to support industrial applications. In this work, we designed a poly(ionic liquid) (PIL)‐based Cu0–CuI tandem catalyst for the production of C2+ products with both high reaction rate and high selectivity. Remarkably, a high C2+ faradaic efficiency (FEnormalC2+ ) of 76.1 % with a high partial current density of 304.2 mA cm−2 is obtained. Mechanistic studies reveal the numbers and highly dispersed Cu0‐PIL‐CuI interfaces are vital for such reactivity. Specifically, Cu nanoparticles derived Cu0‐PIL interfaces account for high current density and a moderate C2+ selectivity, whereas CuI species derived PIL‐CuI interfaces exhibit high activity for C−C coupling with the local enriched *CO intermediate. Furthermore, the presence of the PIL layer promotes the C2+ selectivity by lowering the barrier of C−C coupling.

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The Crystal Plane is not the Key Factor for CO₂‐to‐Methane Electrosynthesis on Reconstructed Cu₂O Microparticles

Deng

Huang

et al. 2021

Angewandte Chemie

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Cu 2 O microparticles with controllable crystal planes and relatively high stability have been recognized as a good platform to understand the mechanism of the electrocatalytic CO 2 reduction reaction (CO 2 RR). Herein, we demonstrate that the in situ generated Cu 2 O/Cu interface plays a key role in determining the selectivity of methane formation, rather than the initial crystal plane of the reconstructed Cu 2 O microparticles. Experimental results indicate that the methane evolution is dominated on all three different crystal planes with similar Tafel slopes and longterm stabilities. Density functional theory (DFT) calculations further reveal that *CO is protonated via a similar bridge configuration at the Cu 2 O/Cu interface, regardless of the initial crystal planes of Cu 2 O. The Gibbs free energy changes (ΔG) of *CHO on different reconstructed Cu 2 O planes are close and more negative than that of *OCCOH, indicating the methane formation is more favorable than ethylene on all Cu 2 O crystal planes.

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Operando‐Untersuchung von Ag‐dekorierten Cu₂O‐Nanowürfel‐Katalysatoren mit verbesserter CO₂‐Elektroreduktion zu Flüssigprodukten

Abstract: Supporting information for this article is given via a link at the end of the document.

Cited by 10 publications

References 50 publications

Tracking heterogeneous structural motifs and the redox behaviour of copper–zinc nanocatalysts for the electrocatalytic CO₂ reduction using operando time resolved spectroscopy and machine learning

Tracking heterogeneous structural motifs and the redox behaviour of copper–zinc nanocatalysts for the electrocatalytic CO₂ reduction using operando time resolved spectroscopy and machine learning

Highly Efficient Electrocatalytic CO₂ Reduction to C₂₊ Products on a Poly(ionic liquid)‐Based Cu⁰–Cu^I Tandem Catalyst

The Crystal Plane is not the Key Factor for CO₂‐to‐Methane Electrosynthesis on Reconstructed Cu₂O Microparticles

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Operando‐Untersuchung von Ag‐dekorierten Cu2O‐Nanowürfel‐Katalysatoren mit verbesserter CO2‐Elektroreduktion zu Flüssigprodukten

Abstract: Supporting information for this article is given via a link at the end of the document.

Cited by 10 publications

References 50 publications

Tracking heterogeneous structural motifs and the redox behaviour of copper–zinc nanocatalysts for the electrocatalytic CO2 reduction using operando time resolved spectroscopy and machine learning

Tracking heterogeneous structural motifs and the redox behaviour of copper–zinc nanocatalysts for the electrocatalytic CO2 reduction using operando time resolved spectroscopy and machine learning

Highly Efficient Electrocatalytic CO2 Reduction to C2+ Products on a Poly(ionic liquid)‐Based Cu0–CuI Tandem Catalyst

The Crystal Plane is not the Key Factor for CO2‐to‐Methane Electrosynthesis on Reconstructed Cu2O Microparticles

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Product

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Operando‐Untersuchung von Ag‐dekorierten Cu₂O‐Nanowürfel‐Katalysatoren mit verbesserter CO₂‐Elektroreduktion zu Flüssigprodukten

Tracking heterogeneous structural motifs and the redox behaviour of copper–zinc nanocatalysts for the electrocatalytic CO₂ reduction using operando time resolved spectroscopy and machine learning

Tracking heterogeneous structural motifs and the redox behaviour of copper–zinc nanocatalysts for the electrocatalytic CO₂ reduction using operando time resolved spectroscopy and machine learning

Highly Efficient Electrocatalytic CO₂ Reduction to C₂₊ Products on a Poly(ionic liquid)‐Based Cu⁰–Cu^I Tandem Catalyst

The Crystal Plane is not the Key Factor for CO₂‐to‐Methane Electrosynthesis on Reconstructed Cu₂O Microparticles