TY - JOUR
T1 - Seriatim ECSTM-ECPMIRS of the adsorption of carbon monoxide on Cu(100) in alkaline solution at CO2-reduction potentials
AU - Baricuatro, Jack H.
AU - Kim, Youn Geun
AU - Korzeniewski, Carol L.
AU - Soriaga, Manuel P.
N1 - Funding Information:
This material is based upon work performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy under Award No. DE-SC0004993 .
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/6
Y1 - 2018/6
N2 - It was recently demonstrated that the sequential or seriatim application of electrochemical scanning tunneling microscopy (ECSTM) and differential electrochemical mass spectrometry (DEMS) enables the correlation, under actual reaction conditions, of a specific structure on a Cu electrode surface with the generation of a particular CO-reduction product. As an extension of the operando hyphenated-technique approach, we paired ECSTM with electrochemical polarization-modulation IR reflection-absorption spectroscopy (ECPMIRS) to identify a delineating potential that affected the coverage, the molecular orientation, and the adlattice structure of CO adsorbed on Cu(100) in 0.1 M KOH under CO2-reduction conditions. The results may have significant ramifications on the theory-based reaction mechanism for the formation of C2 compounds, as well as insights into the mode of coordination between CO and zerovalent Cu.
AB - It was recently demonstrated that the sequential or seriatim application of electrochemical scanning tunneling microscopy (ECSTM) and differential electrochemical mass spectrometry (DEMS) enables the correlation, under actual reaction conditions, of a specific structure on a Cu electrode surface with the generation of a particular CO-reduction product. As an extension of the operando hyphenated-technique approach, we paired ECSTM with electrochemical polarization-modulation IR reflection-absorption spectroscopy (ECPMIRS) to identify a delineating potential that affected the coverage, the molecular orientation, and the adlattice structure of CO adsorbed on Cu(100) in 0.1 M KOH under CO2-reduction conditions. The results may have significant ramifications on the theory-based reaction mechanism for the formation of C2 compounds, as well as insights into the mode of coordination between CO and zerovalent Cu.
KW - Electrochemical reduction of CO in alkaline solution
KW - Operando electrode-surface nanoscopy
KW - Operando molecular vibrational spectroscopy
KW - Potential-dependent CO adsorption on Cu(100)
KW - Seriatim ECSTM-ECPMIRS
UR - http://www.scopus.com/inward/record.url?scp=85046071731&partnerID=8YFLogxK
U2 - 10.1016/j.elecom.2018.04.016
DO - 10.1016/j.elecom.2018.04.016
M3 - Article
AN - SCOPUS:85046071731
SN - 1388-2481
VL - 91
SP - 1
EP - 4
JO - Electrochemistry Communications
JF - Electrochemistry Communications
ER -