Interaction of ZnO surfaces with oxygen after illumination in the presence of CO and O2

Autor: J. Łagowski, C.L. Balestra, Harry C. Gatos, R.P. Holmstrom
Rok vydání: 1978
Předmět:
Zdroj: Surface Science. 76:L575-L579
ISSN: 0039-6028
DOI: 10.1016/0039-6028(78)90115-2
Popis: It was found that oxygen chemisorption on ZnO surfaces is accelerated by as much as three orders of magnitude after illumination in the presence of CO + O 2 . This accelerated chemisorption is characterized by electron transfer and thermal activation as is oxygen chemisorption on “real” ZnO surfaces. The observed behavior is attributed to the formation of surface complexes (involving carbon, oxygen and Zn ions) which enhance oxygen chemisorption. These complexes are stable at room temperature and render the surface inert to further CO-interaction.
Databáze: OpenAIRE