Cited by 694CO2 Reduction Techniques and CatalystsElectrocatalysts for Energy ConversionCatalysts for Methane Reforming

Grain-Boundary-Dependent CO 2 Electroreduction Activity

Feng, Xiaofeng, Jiang, Kaili, Fan, Shoushan, Kanan, Matthew W.·2015·Journal of the American Chemical Society

Abstract

Uncovering new structure-activity relationships for metal nanoparticle (NP) electrocatalysts is crucial for advancing many energy conversion technologies. Grain boundaries (GBs) could be used to stabilize unique active surfaces, but a quantitative correlation between GBs and catalytic activity has not been established. Here we use vapor deposition to prepare Au NPs on carbon nanotubes (Au/CNT). As deposited, the Au NPs have a relatively high density of GBs that are readily imaged by transmission electron microscopy (TEM); thermal annealing lowers the density in a controlled manner. We show that the surface-area-normalized activity for CO2 reduction is linearly correlated with GB surface density on Au/CNT, demonstrating that GB engineering is a powerful approach to improving the catalytic activity of metal NPs.

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Crossref · 10.1021/ja5130513

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Authors
Feng, X., Jiang, K., Fan, S., & Kanan, M. W.
Affiliations
  • Stanford University (US)
  • Tsinghua University (CN)
Corresponding author
Kanan, Matthew W.
Venue
Journal of the American Chemical Society
Published
2015-04-06
Volume
137
Issue
14
Pages
4606-4609
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
OpenAlex
W2070384700
Cited by
694
References
24
Citations by year
2026: 23 · 2025: 50 · 2024: 54 · 2023: 55 · 2022: 79 · 2021: 69 · 2020: 103 · 2019: 80 · 2018: 71 · 2017: 58 · 2016: 38 · 2015: 13
FWCI
17.74
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of the American Chemical Society (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Division of Chemistry (CHE-1266401)
  • Stanford University (106765)
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, grain boundaries, gold nanoparticles, carbon nanotubes, structure-activity relationship, annealing, vapor deposition

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