Photolysis of the CO2 + K/Au(111) system

Arnold Péter Farkas, F. Solymosi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Photoinduced activation of CO2 was investigated on a K-dosed Au(111) surface. The methods used were work function measurements, high-resolution electron energy loss spectroscopy (HREELS), and thermal desorption spectroscopy. Illumination of CO2 adsorbed on a clean Au(111) surface with a 65 W Hg arc lamp produced no HREEL spectral signals indicative of the formation of CO2-. As was revealed in a previous paper (Farkas and Solymosi, J. Phys. Chem. C 2009, 113, 19930), potassium adatoms induce the formation of negatively charged CO2 on Au(111). Illumination of the CO2 + K/Au(111) system enhanced (i) the electron transfer from K-dosed Au to CO2, (ii) the amount of strongly adsorbed CO2, (iii) the formation of CO, and (iv) the intensity of the vibration loss of the asymmetric stretch of CO2-. It is assumed that the photoelectrons play a role in the photolysis of the CO 2 + K coadsorbed layer.

Original languageEnglish
Pages (from-to)16979-16982
Number of pages4
JournalJournal of Physical Chemistry C
Volume114
Issue number40
DOIs
Publication statusPublished - Oct 14 2010

Fingerprint

Photolysis
Carbon Monoxide
photolysis
Lighting
Arc lamps
Thermal desorption spectroscopy
Adatoms
Electron energy loss spectroscopy
Photoelectrons
illumination
arc lamps
Potassium
Chemical activation
spectroscopy
adatoms
Electrons
potassium
electron transfer
photoelectrons
energy dissipation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Photolysis of the CO2 + K/Au(111) system. / Farkas, Arnold Péter; Solymosi, F.

In: Journal of Physical Chemistry C, Vol. 114, No. 40, 14.10.2010, p. 16979-16982.

Research output: Contribution to journalArticle

Farkas, Arnold Péter ; Solymosi, F. / Photolysis of the CO2 + K/Au(111) system. In: Journal of Physical Chemistry C. 2010 ; Vol. 114, No. 40. pp. 16979-16982.
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