CO2- INTERMEDIATES IN THE CO ZNO(0001) INTERFACE/

Electron energy-loss and total current spectroscopy and photodesorptio n methods are employed in studies of CO adsorption on a ZnO(0001) surf ace. Predominantly CO2 molecules are registered in the light-induced d esorption flow. In addition to the desorption stimulated by thermal ac tion of light, a photodesorption component of CO2 is observed. The spe ctroscopy data provides evidence for CO oxidation on the ZnO(0001) sur face and for formation of a (CO2-) chemisorption complex which is cons idered as an initial state for CO2 photodesorption.