---
_id: '8926'
abstract:
- lang: eng
  text: 'Bimetallic nanoparticles with tailored size and specific composition have
    shown promise as stable and selective catalysts for electrochemical reduction
    of CO2 (CO2R) in batch systems. Yet, limited effort was devoted to understand
    the effect of ligand coverage and postsynthesis treatments on CO2 reduction, especially
    under industrially applicable conditions, such as at high currents (>100 mA/cm2)
    using gas diffusion electrodes (GDE) and flow reactors. In this work, Cu–Ag core–shell
    nanoparticles (11 ± 2 nm) were prepared with three different surface modes: (i)
    capped with oleylamine, (ii) capped with monoisopropylamine, and (iii) surfactant-free
    with a reducing borohydride agent; Cu–Ag (OAm), Cu–Ag (MIPA), and Cu–Ag (NaBH4),
    respectively. The ligand exchange and removal was evidenced by infrared spectroscopy
    (ATR-FTIR) analysis, whereas high-resolution scanning transmission electron microscopy
    (HAADF-STEM) showed their effect on the interparticle distance and nanoparticle
    rearrangement. Later on, we developed a process-on-substrate method to track these
    effects on CO2R. Cu–Ag (OAm) gave a lower on-set potential for hydrocarbon production,
    whereas Cu–Ag (MIPA) and Cu–Ag (NaBH4) promoted syngas production. The electrochemical
    impedance and surface area analysis on the well-controlled electrodes showed gradual
    increases in the electrical conductivity and active surface area after each surface
    treatment. We found that the increasing amount of the triple phase boundaries
    (the meeting point for the electron–electrolyte–CO2 reactant) affect the required
    electrode potential and eventually the C+2e̅/C2e̅ product ratio. This study highlights
    the importance of the electron transfer to those active sites affected by the
    capping agents—particularly on larger substrates that are crucial for their industrial
    application.'
acknowledgement: The authors also acknowledge financial support from the University
  Research Fund (BOF-GOA-PS ID No. 33928). S.L. has received funding from the European
  Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie
  Grant Agreement No. 665385.
article_processing_charge: No
article_type: original
author:
- first_name: Erdem
  full_name: Irtem, Erdem
  last_name: Irtem
- first_name: Daniel
  full_name: Arenas Esteban, Daniel
  last_name: Arenas Esteban
- first_name: Miguel
  full_name: Duarte, Miguel
  last_name: Duarte
- first_name: Daniel
  full_name: Choukroun, Daniel
  last_name: Choukroun
- first_name: Seungho
  full_name: Lee, Seungho
  id: BB243B88-D767-11E9-B658-BC13E6697425
  last_name: Lee
  orcid: 0000-0002-6962-8598
- first_name: Maria
  full_name: Ibáñez, Maria
  id: 43C61214-F248-11E8-B48F-1D18A9856A87
  last_name: Ibáñez
  orcid: 0000-0001-5013-2843
- first_name: Sara
  full_name: Bals, Sara
  last_name: Bals
- first_name: Tom
  full_name: Breugelmans, Tom
  last_name: Breugelmans
citation:
  ama: Irtem E, Arenas Esteban D, Duarte M, et al. Ligand-mode directed selectivity
    in Cu-Ag core-shell based gas diffusion electrodes for CO2 electroreduction. <i>ACS
    Catalysis</i>. 2020;10(22):13468-13478. doi:<a href="https://doi.org/10.1021/acscatal.0c03210">10.1021/acscatal.0c03210</a>
  apa: Irtem, E., Arenas Esteban, D., Duarte, M., Choukroun, D., Lee, S., Ibáñez,
    M., … Breugelmans, T. (2020). Ligand-mode directed selectivity in Cu-Ag core-shell
    based gas diffusion electrodes for CO2 electroreduction. <i>ACS Catalysis</i>.
    American Chemical Society. <a href="https://doi.org/10.1021/acscatal.0c03210">https://doi.org/10.1021/acscatal.0c03210</a>
  chicago: Irtem, Erdem, Daniel Arenas Esteban, Miguel Duarte, Daniel Choukroun, Seungho
    Lee, Maria Ibáñez, Sara Bals, and Tom Breugelmans. “Ligand-Mode Directed Selectivity
    in Cu-Ag Core-Shell Based Gas Diffusion Electrodes for CO2 Electroreduction.”
    <i>ACS Catalysis</i>. American Chemical Society, 2020. <a href="https://doi.org/10.1021/acscatal.0c03210">https://doi.org/10.1021/acscatal.0c03210</a>.
  ieee: E. Irtem <i>et al.</i>, “Ligand-mode directed selectivity in Cu-Ag core-shell
    based gas diffusion electrodes for CO2 electroreduction,” <i>ACS Catalysis</i>,
    vol. 10, no. 22. American Chemical Society, pp. 13468–13478, 2020.
  ista: Irtem E, Arenas Esteban D, Duarte M, Choukroun D, Lee S, Ibáñez M, Bals S,
    Breugelmans T. 2020. Ligand-mode directed selectivity in Cu-Ag core-shell based
    gas diffusion electrodes for CO2 electroreduction. ACS Catalysis. 10(22), 13468–13478.
  mla: Irtem, Erdem, et al. “Ligand-Mode Directed Selectivity in Cu-Ag Core-Shell
    Based Gas Diffusion Electrodes for CO2 Electroreduction.” <i>ACS Catalysis</i>,
    vol. 10, no. 22, American Chemical Society, 2020, pp. 13468–78, doi:<a href="https://doi.org/10.1021/acscatal.0c03210">10.1021/acscatal.0c03210</a>.
  short: E. Irtem, D. Arenas Esteban, M. Duarte, D. Choukroun, S. Lee, M. Ibáñez,
    S. Bals, T. Breugelmans, ACS Catalysis 10 (2020) 13468–13478.
date_created: 2020-12-06T23:01:15Z
date_published: 2020-11-20T00:00:00Z
date_updated: 2023-08-24T10:52:32Z
day: '20'
department:
- _id: MaIb
doi: 10.1021/acscatal.0c03210
ec_funded: 1
external_id:
  isi:
  - '000592978900031'
intvolume: '        10'
isi: 1
issue: '22'
language:
- iso: eng
month: '11'
oa_version: None
page: 13468-13478
project:
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: ACS Catalysis
publication_identifier:
  eissn:
  - '21555435'
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Ligand-mode directed selectivity in Cu-Ag core-shell based gas diffusion electrodes
  for CO2 electroreduction
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 10
year: '2020'
...