Abstract
The interaction of CO on the clean and a CO2-precovered ZnO(1010) surface has been investigated with low-temperature scanning tunneling microscopy in combination with density-functional theory calculations. On the clean surface, CO binds weakly to the surface Zn ions and diffuses readily along the [1210] direction even at liquid nitrogen temperature. In contrast, the presence of CO2 significantly enhances the binding strength of the CO molecules in the vicinity and in turn suppresses their diffusion. These findings are believed to provide new insights of the atomistic interactions of distinct reagents on the ZnO surface, and hence shed light onto the roles of ZnO in the syngas-involved catalytic reactions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have