Document Type
Article
Publication Date
10-2021
Publication Title
Journal of Vacuum Science & Technology A
Volume
39
Issue
5
Pages
1-7
Publisher Name
American Vacuum Society
Abstract
The adsorption of oxygen and the resultant O-induced surface reconstructions are key components in heterogeneously catalyzed reactions on silver metal surfaces. O uptake and reconstructions on planar Ag(111) are well-characterized, and in this paper, we show that curved Ag(111) features similar O adsorption and reconstructions. Through a systematic scanning tunneling microscope study of a curved Ag(111) single crystal exposed to gas-phase atomic oxygen at a temperature of 525 K, we observed Oad and, upon higher coverages, saw p(4 4) and p(4 5 p3) reconstructions form on both the A-type and B-type steps. Exposures at low temperatures (< 500 K) resulted in the formation of subsurface oxygen and the appearance of a stripe pattern and amorphous phase on the surface. Upon heating, stable surface reconstructions were formed. Although the geometric arrangement of atoms along the steps were different, A-type and B-type steps formed the same reconstructions. In addition, the B-type steps also saw the formation of several different features atop the oxygen reconstructions.
Recommended Citation
Turano, Marie; Juurlink, Ludo B. F.; Gillum, Maxwell Z.; Jamka, Elizabeth A.; Hildebrandt, George; Lewis, Faith J.; and Killelea, Daniel. Oxygen-Induced Surface Reconstructions on Curved Ag(111). Journal of Vacuum Science & Technology A, 39, 5: 1-7, 2021. Retrieved from Loyola eCommons, Chemistry: Faculty Publications and Other Works, http://dx.doi.org/10.1116/6.0001167
Copyright Statement
© The Authors, 2021.
Comments
Author Posting © The Authors, 2021. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Journal of Vacuum Science & Technology A, Volume 39, Issue 5, Pages 1-7, and may be found at https://doi.org/10.1116/6.0001167.