In-situ infrared spectroscopy applied to the study of the electrocatalytic reduction of CO2: Theory, practice and challenges

Recep Kas, Onagie Ayemoba, Nienke J. Firet, Joost Middelkoop, Wilson A. Smith (Corresponding Author), Angel Cuesta* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The field of electrochemical CO2 conversion is undergoing significant growth in terms of the number of publications and worldwide research groups involved. Despite improvements of the catalytic performance, the complex reaction mechanisms and solution chemistry of CO2 has resulted in a considerable amount of discrepancies between theoretical and experimental studies. A clear
identification of the reaction mechanism and the catalytic sites are of key importance in order to allow for a qualitative breakthrough and, from an experimental perspective, calls for the use of in-situ or operando spectroscopic techniques. In-situ infrared spectroscopy can provide information on the nature of intermediate species and products in real time and, in some cases, with relatively high time resolution. In this contribution, we review key theoretical aspects of infrared reflection spectroscopy, followed by considerations of
practical implementation. Finally, recent applications to the electrocatalytic reduction of CO2 are reviewed, including challenges associated with the detection of reaction intermediates.
Original languageEnglish
Pages (from-to)2904-2925
Number of pages22
JournalChemPhysChem
Volume20
Issue number22
Early online date11 Sep 2019
DOIs
Publication statusPublished - 19 Nov 2019

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Keywords

  • In-situ infrared spectroscopy
  • electrochemical CO2 reduction
  • spectro-electrochemistry
  • SEIRAS
  • Carbon Dioxide
  • carbon dioxide
  • electrochemical CO reduction
  • in-situ infrared spectroscopy
  • FORMIC-ACID
  • ELECTROLYTIC REDUCTION
  • ELECTROCHEMICAL REDUCTION
  • ABSORPTION SPECTROSCOPY
  • ENHANCED RAMAN-SCATTERING
  • EXTERNAL REFLECTION SPECTROSCOPY
  • ATR-SEIRAS
  • SURFACE-PLASMON RESONANCE
  • SILVER ISLAND FILMS
  • CARBON-DIOXIDE

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry

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