In situ Ru LII and LIII edge x-ray absorption near edge structure of electrodeposited ruthenium dioxide films

Ionel C. Stefan, Yibo Mo, Mark R. Antonio, Daniel Alberto Scherson

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The electronic properties of electrodeposited Ru oxide films supported on Au have been examined in situ by Ru LIII and LII edge X-ray absorption near edge structure (XANES) in acid media. The results obtained are consistent with the main voltammetric peak centered at 0.7 V vs RHE as being attributed to a redox couple involving formally Ru3+ and Ru4+ sites in the lattice. A linear correlation was found between the extent of oxidation of the film as derived from a deconvolution of the spectral features and the charge as determined from coulometric analysis of the voltammetric curves. This observation suggests that only two Ru-based redox states are involved in this electrochemical process.

Original languageEnglish
Pages (from-to)12373-12375
Number of pages3
JournalJournal of Physical Chemistry B
Volume106
Issue number48
DOIs
Publication statusPublished - 2002 Dec 5
Externally publishedYes

Fingerprint

Ruthenium
dioxides
x ray absorption
ruthenium
Oxidation-Reduction
X-Rays
X rays
X ray absorption
Deconvolution
Electronic properties
Oxides
Oxide films
oxide films
Oxidation
oxidation
acids
Acids
curves
electronics
x rays

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

In situ Ru LII and LIII edge x-ray absorption near edge structure of electrodeposited ruthenium dioxide films. / Stefan, Ionel C.; Mo, Yibo; Antonio, Mark R.; Scherson, Daniel Alberto.

In: Journal of Physical Chemistry B, Vol. 106, No. 48, 05.12.2002, p. 12373-12375.

Research output: Contribution to journalArticle

@article{dbbb498d3ea549009e214a4830dfddad,
title = "In situ Ru LII and LIII edge x-ray absorption near edge structure of electrodeposited ruthenium dioxide films",
abstract = "The electronic properties of electrodeposited Ru oxide films supported on Au have been examined in situ by Ru LIII and LII edge X-ray absorption near edge structure (XANES) in acid media. The results obtained are consistent with the main voltammetric peak centered at 0.7 V vs RHE as being attributed to a redox couple involving formally Ru3+ and Ru4+ sites in the lattice. A linear correlation was found between the extent of oxidation of the film as derived from a deconvolution of the spectral features and the charge as determined from coulometric analysis of the voltammetric curves. This observation suggests that only two Ru-based redox states are involved in this electrochemical process.",
author = "Stefan, {Ionel C.} and Yibo Mo and Antonio, {Mark R.} and Scherson, {Daniel Alberto}",
year = "2002",
month = "12",
day = "5",
doi = "10.1021/jp026300f",
language = "English",
volume = "106",
pages = "12373--12375",
journal = "Journal of Physical Chemistry B Materials",
issn = "1520-6106",
publisher = "American Chemical Society",
number = "48",

}

TY - JOUR

T1 - In situ Ru LII and LIII edge x-ray absorption near edge structure of electrodeposited ruthenium dioxide films

AU - Stefan, Ionel C.

AU - Mo, Yibo

AU - Antonio, Mark R.

AU - Scherson, Daniel Alberto

PY - 2002/12/5

Y1 - 2002/12/5

N2 - The electronic properties of electrodeposited Ru oxide films supported on Au have been examined in situ by Ru LIII and LII edge X-ray absorption near edge structure (XANES) in acid media. The results obtained are consistent with the main voltammetric peak centered at 0.7 V vs RHE as being attributed to a redox couple involving formally Ru3+ and Ru4+ sites in the lattice. A linear correlation was found between the extent of oxidation of the film as derived from a deconvolution of the spectral features and the charge as determined from coulometric analysis of the voltammetric curves. This observation suggests that only two Ru-based redox states are involved in this electrochemical process.

AB - The electronic properties of electrodeposited Ru oxide films supported on Au have been examined in situ by Ru LIII and LII edge X-ray absorption near edge structure (XANES) in acid media. The results obtained are consistent with the main voltammetric peak centered at 0.7 V vs RHE as being attributed to a redox couple involving formally Ru3+ and Ru4+ sites in the lattice. A linear correlation was found between the extent of oxidation of the film as derived from a deconvolution of the spectral features and the charge as determined from coulometric analysis of the voltammetric curves. This observation suggests that only two Ru-based redox states are involved in this electrochemical process.

UR - http://www.scopus.com/inward/record.url?scp=0037028174&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037028174&partnerID=8YFLogxK

U2 - 10.1021/jp026300f

DO - 10.1021/jp026300f

M3 - Article

VL - 106

SP - 12373

EP - 12375

JO - Journal of Physical Chemistry B Materials

JF - Journal of Physical Chemistry B Materials

SN - 1520-6106

IS - 48

ER -