Direct monitoring of photo-induced reactions on well-defined metal oxide surfaces using vibrational spectroscopy

Christoph Rohmann, Yuemin Wang, Martin Muhler, James Metson, Hicham Idriss, Christof Woell

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Reflection-absorption infra red spectroscopy (RAIRS) has been successfully used to study a prototype photochemical reaction: the photooxidation of CO over rutile TiO2(110) single crystal surfaces. RAIRS-results revealed the presence of irreversibly adsorbed CO on top of the five fold coordinated surface Ti atoms with a vibration frequency of 2190 cm (1) at 110 K. Because fundamental problems have so far prohibited the detection of CO on metal oxide single crystals with IR-spectroscopy (in contrast to the situation for powders), high resolution electron energy loss spectroscopy (HREELS) was also employed for further confirmation. (C) 2008 Elsevier B. V. All rights reserved.

Original languageEnglish
Pages (from-to)10-12
Number of pages3
JournalChemical Physics Letters
Volume460
Issue number1-3
Early online date21 May 2008
DOIs
Publication statusPublished - 20 Jul 2008

Keywords

  • TIO2(110) surface
  • CO
  • adsorption
  • acidity
  • ethanol
  • cluster

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