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.
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 language | English |
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Pages (from-to) | 2904-2925 |
Number of pages | 22 |
Journal | ChemPhysChem |
Volume | 20 |
Issue number | 22 |
Early online date | 11 Sept 2019 |
DOIs | |
Publication status | Published - 19 Nov 2019 |
Bibliographical note
AcknowledgementsRK and WAS thank the European Research Council (ERC) for the financial support under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 759743 – WUTANG). AC acknowledges the support of the Leverhulme Trust (RPG-2015-040) and OA thanks the University of Aberdeen for an
Elphinstone Fellowship.
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