Cited by 690CO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionCatalysts for Methane Reforming

Exceptional Size-Dependent Activity Enhancement in the Electroreduction of CO2 over Au Nanoparticles

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Mistry, Hemma, Reske, Rulle, Zeng, Zhenhua, Zhao, Zhi-Jian, Greeley, Jeffrey, Strasser, Peter, Cuenya, Beatriz Roldan·2014·Journal of the American Chemical Society

Abstract

The electrocatalytic reduction of CO2 to industrial chemicals and fuels is a promising pathway to sustainable electrical energy storage and to an artificial carbon cycle, but it is currently hindered by the low energy efficiency and low activity displayed by traditional electrode materials. We report here the size-dependent catalytic activity of micelle-synthesized Au nanoparticles (NPs) in the size range of ∼1-8 nm for the electroreduction of CO2 to CO in 0.1 M KHCO3. A drastic increase in current density was observed with decreasing NP size, along with a decrease in Faradaic selectivity toward CO. Density functional theory calculations showed that these trends are related to the increase in the number of low-coordinated sites on small NPs, which favor the evolution of H2 over CO2 reduction to CO. We show here that the H2/CO product ratio can be specifically tailored for different industrial processes by tuning the size of the catalyst particles.

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Crossref · 10.1021/ja508879j

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  • A strong correlation between binding energies of various reaction intermediates on transition metals and a lack of ability to independently control them poses a significant intrinsic limitation in developing suitable catalysts for large-scale commercialization of the CO2 reduction reaction.

    “general understanding at present is that a strong correlation between binding energies of various reaction intermediates on transition metals and a lack of ability to independently control them poses a significant intrinsic limitation in developing suitable catalysts for large-scale commercialization of the CO2 reduction reaction.”

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Authors
Mistry, H., Reske, R., Zeng, Z., Zhao, Z.-J., Greeley, J., Strasser, P., & Cuenya, B. R.
Affiliations
  • University of Central Florida (US)
  • Technische Universität Berlin (DE)
  • Purdue University West Lafayette (US)
  • Department of Physics, Ruhr-University Bochum, 44780 Bochum, Germany
Corresponding author
Strasser, Peter
Venue
Journal of the American Chemical Society
Published
2014-11-17
Volume
136
Issue
47
Pages
16473-16476
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2318118246
Cited by
690
References
26
Citations by year
2026: 18 · 2025: 31 · 2024: 48 · 2023: 48 · 2022: 77 · 2021: 77 · 2020: 92 · 2019: 95 · 2018: 75 · 2017: 54 · 2016: 44 · 2015: 31
FWCI
14.19
Type
journal article
Language
en
Open access
Locations
  • Journal of the American Chemical Society (publishedVersion)
  • PubMed (publishedVersion)
  • Journal of International Crisis and Risk Communication Research (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
  • Basic Energy Sciences (DE-FG02-08ER15995)
  • Deutsche Forschungsgemeinschaft (EXC 1069, STR 596/3-1)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Chemical Engineering › Catalysis › Catalysts for Methane Reforming
Keywords
electrochemical CO2 reduction, gold nanoparticles, size-dependent catalytic activity, micelle synthesis, co-production, Faradaic efficiency, low-coordinated sites, hydrogen evolution reaction, energy storage

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