The interaction between adsorbed OH and O-2 on TiO2 surfaces

Li-Min Liu, Paul Crawford, P. Hu*

*Corresponding author for this work

Research output: Contribution to journalLiterature review

97 Citations (Scopus)

Abstract

Reduced TiO2 (110) surfaces usually have OH groups as a result of H2O dissociation at oxygen vacancy defects. Because of excess electrons due to OH adsorption, OH/TiO2. exhibit interesting properties favorable to further O-2 or H2O adsorption. Both O-2 and H2O can adsorb and easily diffuse on the OH/TiO2 surface; such behavior plays a significant role in photocatalysis, heterogeneous catalysis, electronic devices and sensors. Indeed, the processes of H2O dissociation, O-2 and H2O diffusion on Such TiO2 surfaces, in the presence of OH groups, are important issues in their own right. Herein, the most recent experimental and theoretical progresses in understanding the interactions between adsorbed OH groups and O-2, or H2O, over TiO2 (110) surfaces and their implications will be reviewed. (c) 2009 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)155-176
Number of pages22
JournalProgress in surface science
Volume84
Issue number5-6
DOIs
Publication statusPublished - 2009

Keywords

  • DENSITY-FUNCTIONAL THEORY
  • PHOTOINDUCED HYDROPHILIC CONVERSION
  • DIFFUSE-REFLECTANCE SPECTROSCOPY
  • TEMPERATURE CO OXIDATION
  • GOLD-BASED CATALYSTS
  • X-RAY REFLECTIVITY
  • NEWTON BLACK FILM
  • TIO2(110) SURFACE
  • ELECTRONIC-STRUCTURE
  • TITANIUM-DIOXIDE

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