TY - JOUR
T1 - In-Situ Infrared Spectroscopy Applied to the Study of the Electrocatalytic Reduction of CO2
T2 - Theory, Practice and Challenges
AU - Kas, Recep
AU - Ayemoba, Onagie
AU - Firet, Nienke J.
AU - Middelkoop, Joost
AU - Smith, Wilson A.
AU - Cuesta, Angel
N1 - Accepted Author Manuscript
PY - 2019
Y1 - 2019
N2 - 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 have 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.
AB - 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 have 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.
KW - carbon dioxide
KW - electrochemical CO reduction
KW - in-situ infrared spectroscopy
KW - SEIRAS
KW - spectro-electrochemistry
UR - http://www.scopus.com/inward/record.url?scp=85072165422&partnerID=8YFLogxK
U2 - 10.1002/cphc.201900533
DO - 10.1002/cphc.201900533
M3 - Review article
AN - SCOPUS:85072165422
SN - 1439-4235
VL - 20
SP - 2904
EP - 2925
JO - ChemPhysChem
JF - ChemPhysChem
IS - 22
ER -