FTIR study of the photoinduced dissociation of CO2 on titania-supported noble metals

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Abstract

The effect of illumination on the activation and dissociation of CO2 was investigated a. 190 and 300 K on titania-supported noble metals by means of Fourier transform infrared spectroscopy. The photoinduced dissociation of CO2 (through the formation of CO-2(a)) resulting in CO(a) occurred on Pt/TiO2 Rh/TiO2 and IrATiO2; no CO(a) formation, however, was observed on Pd/TiO2 and Ru/TiO2. It is assumed that the CO2 on supported noble metals is bonded to the surface with both C (linked 10 a noble metal atom) and one of the O atoms (linked to the oxygen vacancy of the supports), and an extended charge transfer induced by illumination leads to the cleavage ofaC-O bond. thermal and photoinduced dissociation of CO2, CO2 adsorbed on oxide-supported.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalCatalysis Letters
Volume56
Issue number1
Publication statusPublished - 1998

Fingerprint

Carbon Monoxide
Precious metals
noble metals
titanium
Titanium
dissociation
Lighting
illumination
thermal dissociation
Atoms
Oxygen vacancies
Oxides
Fourier transform infrared spectroscopy
atoms
Charge transfer
cleavage
Chemical activation
infrared spectroscopy
charge transfer
activation

Keywords

  • Ftir spectroscopy
  • Noble metals
  • The effect of the nature of noble metals and supports

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

FTIR study of the photoinduced dissociation of CO2 on titania-supported noble metals. / Raskó, J.

In: Catalysis Letters, Vol. 56, No. 1, 1998, p. 11-15.

Research output: Contribution to journalArticle

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