Investigation of RuO2-IrO2-SnO2 thin film evolution: A thermoanalytical and spectroscopic study

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6 Citations (Scopus)

Abstract

The thermal evolution process of RuO2-IrO2-SnO 2 mixed oxide thin films of varying noble metal contents has been investigated under in situ conditions by thermogravimetry-mass spectrometry (TG-MS), infrared emission spectroscopy (IR) and cyclic voltammetry (CV). The gel-like films prepared from aqueous solutions of the precursor compounds RuOHCl3, H2IrCl6 and Sn(OH)2(CH 3COO)2-xClx on titanium metal support were heated in an atmosphere containing 20% O2 and 80% Ar up to 600°C. Chlorine evolution takes place in a single step between 320 and 500°C accompanied with the decomposition of the acetate ligand. The decomposition of surface species formed like carbonyls, carboxylates and carbonates occurs in two stages between 200 and 500°C. The temperature of chlorine evolution and that of the final film formation increases with the increase of the iridium content in the films. The anodic peak charge shows a maximum value at 18% iridium content.

Original languageEnglish
Pages (from-to)141-146
Number of pages6
JournalJournal of Thermal Analysis and Calorimetry
Volume86
Issue number1
DOIs
Publication statusPublished - Sep 2006

Fingerprint

Iridium
Chlorine
iridium
Thin films
chlorine
thin films
Decomposition
decomposition
Carbonates
Emission spectroscopy
mixed oxides
Precious metals
thermogravimetry
Titanium
noble metals
carboxylates
Cyclic voltammetry
Oxide films
Mass spectrometry
Thermogravimetric analysis

Keywords

  • Electrocatalysis
  • IrO
  • RuO
  • SnO
  • Sol-gel process
  • Thin films

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

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title = "Investigation of RuO2-IrO2-SnO2 thin film evolution: A thermoanalytical and spectroscopic study",
abstract = "The thermal evolution process of RuO2-IrO2-SnO 2 mixed oxide thin films of varying noble metal contents has been investigated under in situ conditions by thermogravimetry-mass spectrometry (TG-MS), infrared emission spectroscopy (IR) and cyclic voltammetry (CV). The gel-like films prepared from aqueous solutions of the precursor compounds RuOHCl3, H2IrCl6 and Sn(OH)2(CH 3COO)2-xClx on titanium metal support were heated in an atmosphere containing 20{\%} O2 and 80{\%} Ar up to 600°C. Chlorine evolution takes place in a single step between 320 and 500°C accompanied with the decomposition of the acetate ligand. The decomposition of surface species formed like carbonyls, carboxylates and carbonates occurs in two stages between 200 and 500°C. The temperature of chlorine evolution and that of the final film formation increases with the increase of the iridium content in the films. The anodic peak charge shows a maximum value at 18{\%} iridium content.",
keywords = "Electrocatalysis, IrO, RuO, SnO, Sol-gel process, Thin films",
author = "E. Horv{\'a}th and J. Krist{\'o}f and L. V{\'a}zquez-G{\'o}mez and A. R{\'e}dey and V. V{\'a}gv{\"o}lgyi",
year = "2006",
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T1 - Investigation of RuO2-IrO2-SnO2 thin film evolution

T2 - A thermoanalytical and spectroscopic study

AU - Horváth, E.

AU - Kristóf, J.

AU - Vázquez-Gómez, L.

AU - Rédey, A.

AU - Vágvölgyi, V.

PY - 2006/9

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N2 - The thermal evolution process of RuO2-IrO2-SnO 2 mixed oxide thin films of varying noble metal contents has been investigated under in situ conditions by thermogravimetry-mass spectrometry (TG-MS), infrared emission spectroscopy (IR) and cyclic voltammetry (CV). The gel-like films prepared from aqueous solutions of the precursor compounds RuOHCl3, H2IrCl6 and Sn(OH)2(CH 3COO)2-xClx on titanium metal support were heated in an atmosphere containing 20% O2 and 80% Ar up to 600°C. Chlorine evolution takes place in a single step between 320 and 500°C accompanied with the decomposition of the acetate ligand. The decomposition of surface species formed like carbonyls, carboxylates and carbonates occurs in two stages between 200 and 500°C. The temperature of chlorine evolution and that of the final film formation increases with the increase of the iridium content in the films. The anodic peak charge shows a maximum value at 18% iridium content.

AB - The thermal evolution process of RuO2-IrO2-SnO 2 mixed oxide thin films of varying noble metal contents has been investigated under in situ conditions by thermogravimetry-mass spectrometry (TG-MS), infrared emission spectroscopy (IR) and cyclic voltammetry (CV). The gel-like films prepared from aqueous solutions of the precursor compounds RuOHCl3, H2IrCl6 and Sn(OH)2(CH 3COO)2-xClx on titanium metal support were heated in an atmosphere containing 20% O2 and 80% Ar up to 600°C. Chlorine evolution takes place in a single step between 320 and 500°C accompanied with the decomposition of the acetate ligand. The decomposition of surface species formed like carbonyls, carboxylates and carbonates occurs in two stages between 200 and 500°C. The temperature of chlorine evolution and that of the final film formation increases with the increase of the iridium content in the films. The anodic peak charge shows a maximum value at 18% iridium content.

KW - Electrocatalysis

KW - IrO

KW - RuO

KW - SnO

KW - Sol-gel process

KW - Thin films

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