In situ potential difference fourier transform infrared reflection absorption spectroscopic studies of the electrochemical oxidation of adsorbed carbon monoxide on nickel in alkaline solutions

Ming Zhao, Kuilong Wang, Daniel Alberto Scherson

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15 Citations (Scopus)

Abstract

The spectral properties of CO adsorbed on polycrystalline nickel electrodes in 0.1 M KOH have been examined using in situ potential difference Fourier transform infrared spectroscopy. The results obtained have shown that the voltammetric peak observed in the first linear scan in the positive direction for Ni(poly)/CO(ads) surfaces prepared by a special procedure is associated with the electrochemical oxidation of bridge-bonded CO to generate solution-phase carbonate as the only detectable product. No changes in the stretching frequency of CO (vCO) could be found as a function of potential in a region negative to the onset of CO oxidation. However, vCO shifted monotonically toward lower wavenumbers as the coverage of CO was reduced by electrooxidative stripping.

Original languageEnglish
Pages (from-to)4488-4490
Number of pages3
JournalJournal of physical chemistry
Volume97
Issue number17
DOIs
Publication statusPublished - 1993 Jan 1
Externally publishedYes

Fingerprint

electrochemical oxidation
Electrochemical oxidation
infrared reflection
Carbon Monoxide
Nickel
Carbon monoxide
carbon monoxide
Stretching
Fourier transform infrared spectroscopy
Carbonates
Fourier transforms
nickel
Infrared radiation
Oxidation
Electrodes
stripping
carbonates
infrared spectroscopy
oxidation
electrodes

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

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abstract = "The spectral properties of CO adsorbed on polycrystalline nickel electrodes in 0.1 M KOH have been examined using in situ potential difference Fourier transform infrared spectroscopy. The results obtained have shown that the voltammetric peak observed in the first linear scan in the positive direction for Ni(poly)/CO(ads) surfaces prepared by a special procedure is associated with the electrochemical oxidation of bridge-bonded CO to generate solution-phase carbonate as the only detectable product. No changes in the stretching frequency of CO (vCO) could be found as a function of potential in a region negative to the onset of CO oxidation. However, vCO shifted monotonically toward lower wavenumbers as the coverage of CO was reduced by electrooxidative stripping.",
author = "Ming Zhao and Kuilong Wang and Scherson, {Daniel Alberto}",
year = "1993",
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T1 - In situ potential difference fourier transform infrared reflection absorption spectroscopic studies of the electrochemical oxidation of adsorbed carbon monoxide on nickel in alkaline solutions

AU - Zhao, Ming

AU - Wang, Kuilong

AU - Scherson, Daniel Alberto

PY - 1993/1/1

Y1 - 1993/1/1

N2 - The spectral properties of CO adsorbed on polycrystalline nickel electrodes in 0.1 M KOH have been examined using in situ potential difference Fourier transform infrared spectroscopy. The results obtained have shown that the voltammetric peak observed in the first linear scan in the positive direction for Ni(poly)/CO(ads) surfaces prepared by a special procedure is associated with the electrochemical oxidation of bridge-bonded CO to generate solution-phase carbonate as the only detectable product. No changes in the stretching frequency of CO (vCO) could be found as a function of potential in a region negative to the onset of CO oxidation. However, vCO shifted monotonically toward lower wavenumbers as the coverage of CO was reduced by electrooxidative stripping.

AB - The spectral properties of CO adsorbed on polycrystalline nickel electrodes in 0.1 M KOH have been examined using in situ potential difference Fourier transform infrared spectroscopy. The results obtained have shown that the voltammetric peak observed in the first linear scan in the positive direction for Ni(poly)/CO(ads) surfaces prepared by a special procedure is associated with the electrochemical oxidation of bridge-bonded CO to generate solution-phase carbonate as the only detectable product. No changes in the stretching frequency of CO (vCO) could be found as a function of potential in a region negative to the onset of CO oxidation. However, vCO shifted monotonically toward lower wavenumbers as the coverage of CO was reduced by electrooxidative stripping.

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