In situ surface enhanced Raman scattering of ruthenium dioxide films in acid electrolytes

Yibo Mo, Wen Bin Cai, Jian Dong, Paul R. Carey, Daniel Alberto Scherson

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Vibrational aspects of thin RuO2 films (ca. 7-8 × 10-8 mol Ru sites/cm2) electrodeposited on preroughened Au electrodes were investigated in situ in 0.50 M H2SO4 aqueous solutions using surface enhanced Raman scattering (SERS). Prominent peaks could be observed for the material in the predominantly fully oxidized state (+0.80 V vs. SCE) at 456 and 710 cm-1, and predominantly fully reduced state (+0.10 V vs. SCE) at 614 and 750 cm-1. The first set of features is in good agreement with in situ SERS measurements reported by Chan et al. for oxidized metallic Ru films in acid electrolytes polarized at high potentials and ascribed by those authors to a hydrated form of Ru oxide in the 4+ formal oxidation state. Based on our recent in situ Ru K-edge X-ray absorption fine structure of thicker RuO2 films prepared by the same procedure employed in this work, the peaks observed for the first time for the predominantly reduced film are attributed to a highly disordered oxide incorporating Ru sites in the 3+ oxidation state.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume4
Issue number9
DOIs
Publication statusPublished - 2001 Sep 1
Externally publishedYes

Fingerprint

Ruthenium
dioxides
Oxides
Electrolytes
ruthenium
Raman scattering
electrolytes
Raman spectra
Oxidation
Metallic films
oxidation
acids
Acids
oxides
X ray absorption
Thick films
thick films
fine structure
aqueous solutions
Thin films

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering
  • Electrochemistry

Cite this

In situ surface enhanced Raman scattering of ruthenium dioxide films in acid electrolytes. / Mo, Yibo; Cai, Wen Bin; Dong, Jian; Carey, Paul R.; Scherson, Daniel Alberto.

In: Electrochemical and Solid-State Letters, Vol. 4, No. 9, 01.09.2001.

Research output: Contribution to journalArticle

Mo, Yibo ; Cai, Wen Bin ; Dong, Jian ; Carey, Paul R. ; Scherson, Daniel Alberto. / In situ surface enhanced Raman scattering of ruthenium dioxide films in acid electrolytes. In: Electrochemical and Solid-State Letters. 2001 ; Vol. 4, No. 9.
@article{095d8800a0a846ab8ebcd4690c261449,
title = "In situ surface enhanced Raman scattering of ruthenium dioxide films in acid electrolytes",
abstract = "Vibrational aspects of thin RuO2 films (ca. 7-8 × 10-8 mol Ru sites/cm2) electrodeposited on preroughened Au electrodes were investigated in situ in 0.50 M H2SO4 aqueous solutions using surface enhanced Raman scattering (SERS). Prominent peaks could be observed for the material in the predominantly fully oxidized state (+0.80 V vs. SCE) at 456 and 710 cm-1, and predominantly fully reduced state (+0.10 V vs. SCE) at 614 and 750 cm-1. The first set of features is in good agreement with in situ SERS measurements reported by Chan et al. for oxidized metallic Ru films in acid electrolytes polarized at high potentials and ascribed by those authors to a hydrated form of Ru oxide in the 4+ formal oxidation state. Based on our recent in situ Ru K-edge X-ray absorption fine structure of thicker RuO2 films prepared by the same procedure employed in this work, the peaks observed for the first time for the predominantly reduced film are attributed to a highly disordered oxide incorporating Ru sites in the 3+ oxidation state.",
author = "Yibo Mo and Cai, {Wen Bin} and Jian Dong and Carey, {Paul R.} and Scherson, {Daniel Alberto}",
year = "2001",
month = "9",
day = "1",
doi = "10.1149/1.1387226",
language = "English",
volume = "4",
journal = "Electrochemical and Solid-State Letters",
issn = "1099-0062",
publisher = "Electrochemical Society, Inc.",
number = "9",

}

TY - JOUR

T1 - In situ surface enhanced Raman scattering of ruthenium dioxide films in acid electrolytes

AU - Mo, Yibo

AU - Cai, Wen Bin

AU - Dong, Jian

AU - Carey, Paul R.

AU - Scherson, Daniel Alberto

PY - 2001/9/1

Y1 - 2001/9/1

N2 - Vibrational aspects of thin RuO2 films (ca. 7-8 × 10-8 mol Ru sites/cm2) electrodeposited on preroughened Au electrodes were investigated in situ in 0.50 M H2SO4 aqueous solutions using surface enhanced Raman scattering (SERS). Prominent peaks could be observed for the material in the predominantly fully oxidized state (+0.80 V vs. SCE) at 456 and 710 cm-1, and predominantly fully reduced state (+0.10 V vs. SCE) at 614 and 750 cm-1. The first set of features is in good agreement with in situ SERS measurements reported by Chan et al. for oxidized metallic Ru films in acid electrolytes polarized at high potentials and ascribed by those authors to a hydrated form of Ru oxide in the 4+ formal oxidation state. Based on our recent in situ Ru K-edge X-ray absorption fine structure of thicker RuO2 films prepared by the same procedure employed in this work, the peaks observed for the first time for the predominantly reduced film are attributed to a highly disordered oxide incorporating Ru sites in the 3+ oxidation state.

AB - Vibrational aspects of thin RuO2 films (ca. 7-8 × 10-8 mol Ru sites/cm2) electrodeposited on preroughened Au electrodes were investigated in situ in 0.50 M H2SO4 aqueous solutions using surface enhanced Raman scattering (SERS). Prominent peaks could be observed for the material in the predominantly fully oxidized state (+0.80 V vs. SCE) at 456 and 710 cm-1, and predominantly fully reduced state (+0.10 V vs. SCE) at 614 and 750 cm-1. The first set of features is in good agreement with in situ SERS measurements reported by Chan et al. for oxidized metallic Ru films in acid electrolytes polarized at high potentials and ascribed by those authors to a hydrated form of Ru oxide in the 4+ formal oxidation state. Based on our recent in situ Ru K-edge X-ray absorption fine structure of thicker RuO2 films prepared by the same procedure employed in this work, the peaks observed for the first time for the predominantly reduced film are attributed to a highly disordered oxide incorporating Ru sites in the 3+ oxidation state.

UR - http://www.scopus.com/inward/record.url?scp=0035469722&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035469722&partnerID=8YFLogxK

U2 - 10.1149/1.1387226

DO - 10.1149/1.1387226

M3 - Article

AN - SCOPUS:0035469722

VL - 4

JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

SN - 1099-0062

IS - 9

ER -