Direct Monitoring of Photo-induced Reactions on Well-defined Metal Oxide Surfaces Using Vibrational Spectroscopy

  • Autor: Rohmann, C. / Wang, Y. / Muhler, M. / Metson, J. B. / Idriss, H. / Wöll, C. (2008)

  • Quelle:

    Chem. Phys. Lett. 460 (2008), 10-12
  • Datum: 2008

  • Rohmann, C. / Wang, Y. / Muhler, M. / Metson, J. B. / Idriss, H. / Wöll, C. (2008): „Direct Monitoring of Photo-induced Reactions on Well-defined Metal Oxide Surfaces Using Vibrational Spectroscopy“. In: Chem. Phys. Lett. 460 (2008), 10-12

Abstract

Reflection–absorption infra red spectroscopy (RAIRS) has been successfully used to study a prototype photochemical reaction: the photooxidation of CO over rutile TiO2(1 1 0) 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.

 

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