In-situ Mössbauer effect spectroscopy of adsorbed species on high surface area electrodes

Daniel Alberto Scherson, S. B. Yao, E. B. Yeager, J. Eldridge, M. E. Kordesch, R. W. Hoffman

Research output: Contribution to journalArticle

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Abstract

The feasibility of in-situ Mössbauer transmission spectroscopy of species adsorbed on high surface area electrodes has been demonstrated using iron phthalocyanine on high surface area carbon. The choice of an appropriate cell geometry has allowed detection of strong absorption signals at room temperature without resorting to isotope enrichment of the compound. The quadrupole splitting of the doublet assigned to FePc adsorbed on the carbon surface was found to decrease from 0.88 mm/s for the dry specimen to 0.68 mm/s upon immersion of the sample into an arsaline electrolyte with a nearly constant isomer shift of ∼0.35 mm/s with respect to α-Fe (metal). This phenomenon is antributed to the formation of an octahedral complex with a hydroxyl ion coordinated in the axial position. Mössbauer spectra at several potentials have been obtained and no significant differences were observed in any of the relevant parameters.

Original languageEnglish
Pages (from-to)325-332
Number of pages8
JournalApplications of Surface Science
Volume10
Issue number3
DOIs
Publication statusPublished - 1982 Jan 1
Externally publishedYes

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Spectroscopy
Electrodes
electrodes
Carbon
spectroscopy
carbon
Isotopes
Isomers
submerging
Electrolytes
isomers
isotopes
quadrupoles
Metals
electrolytes
Iron
iron
Geometry
shift
Ions

ASJC Scopus subject areas

  • Engineering(all)

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In-situ Mössbauer effect spectroscopy of adsorbed species on high surface area electrodes. / Scherson, Daniel Alberto; Yao, S. B.; Yeager, E. B.; Eldridge, J.; Kordesch, M. E.; Hoffman, R. W.

In: Applications of Surface Science, Vol. 10, No. 3, 01.01.1982, p. 325-332.

Research output: Contribution to journalArticle

Scherson, Daniel Alberto ; Yao, S. B. ; Yeager, E. B. ; Eldridge, J. ; Kordesch, M. E. ; Hoffman, R. W. / In-situ Mössbauer effect spectroscopy of adsorbed species on high surface area electrodes. In: Applications of Surface Science. 1982 ; Vol. 10, No. 3. pp. 325-332.
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