| AVS 62nd International Symposium & Exhibition | |
| Surface Science | Monday Sessions |
| Session SS+AS+EN-MoM |
| Session: | Synthesis, Structure and Characterization of Oxides |
| Presenter: | Daniel Killelea, Loyola University Chicago |
| Authors: | D.R. Killelea, Loyola University Chicago J. Derouin, Loyola University Chicago R.G. Farber, Loyola University Chicago |
| Correspondent: | Click to Email |
Rhodium surfaces are of high utility for the partial oxidation of small molecules. We present results from a study of the uptake of gas-phase oxygen atoms on the Rh(111) surface. A combination of temperature programmed desorption (TPD), Auger electron spectroscopy (AES), and scanning tunneling microscopy (STM) were used to determine the total amount of oxygen, the oxygen surface coverages, and the surface structures, respectively. Our findings suggest that oxygen atoms are readily incorporated in to the near-surface region on Rh(111) while retaining low oxygen surface coverages and structures. We further studied how the surface changes when the subsurface oxygen atoms emerge to the surface. These finding provide insight to the formation of bulk oxides, and show that high-coverages of oxygen are not necessary for absorption of oxygen into the selvedge.