Photoemission Study of CO_{2} adsorbed on K/Cu(110). Analysis of Adsorbate Induced Structures

• Authors: P. Godowski , J. Onsgaard , S. Hoffmann , J. Nerlov
• Languages of publication: EN

Abstracts

EN

Using photoemission spectroscopy, adsorption and reaction of CO_{2} on potassium modified Cu(110) were studied. In agreement with published results of thermally programmed desorption, apart from carbonate and carbon monoxide as the disproportionation reaction products, a linear CO_{2} molecule and a bent active CO_{2}(-) species were identified. The reaction paths are independent on the potassium precoverage but the number of CO_{3} molecules increases with the number of potassium adatoms. The presence of the CO_{2}(-), stable up to 200 K, suitable for the reactivity of the interface in respect of the methanol synthesis, could be confirmed in the complex valence band spectra by occurrence of the characteristic peak at binding energy of 6.8 eV.

Keywords

EN

79.60.Jv; 33.60.-q; 82.80.Pv

Discipline

• 79.60.Jv: Interfaces; heterostructures; nanostructures
• 82.80.Pv: Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1999
• Volume: 95
• Issue: 3
• Pages: 423-431

Dates

published

1999-03

received

1998-11-13

Contributors

author

P. Godowski

• Institute of Experimental Physics, University of Wrocław, Pl. Maxa Borna 9, 50-204 Wrocław, Poland

author

J. Onsgaard

• Institute of Physics, Odense University, Campusvej 55, 5230 Odense M, Denmark

author

S. Hoffmann

• Institute for Storage Ring Facilities, University of Aarhus, Bgning 520, Ny Munkegade, 8000 Aarhus C, Denmark

author

J. Nerlov

• Department of Chemistry, University of Copenhagen, Universitetparken 5, 2100 Copenhagen, Denmark

Identifiers

DOI

10.12693/APhysPolA.95.423