Water-oxygen interplay on tin dioxide surface: Implication on gas sensing

Dorota Koziej, Nicolae Bârsan, Udo Weimar, Jacek Szuber, Kengo Shimanoe, Noboru Yamazoe

Research output: Contribution to journalArticlepeer-review

105 Citations (Scopus)

Abstract

Resistance measurements and direct spectroscopic investigations were used to monitor the surface reaction path between oxygen and water at the surface of SnO2. The experiments were carried out at high sensor operation temperature (330 and 400 °C) and at a constant background of water vapour. We found that there is a significant interaction between adsorbed oxygen ions and water vapour, which results in formation of terminal hydroxyl groups on tin dioxide surface. This observation is an evidence of water-oxygen interaction and so brings a new insight to the mechanistic modelling of the sensing with tin dioxide based sensors.

Original languageEnglish
Pages (from-to)321-323
Number of pages3
JournalChemical Physics Letters
Volume410
Issue number4-6
DOIs
Publication statusPublished - Jul 20 2005

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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