X-ray photoelectron diffraction study of oxygen adsorption on the stepped copper surfaces (410) and (211)

Bridging the structure gap: Chemistry of nanostructured surfaces at well-defined defects

“…This model is implicit in the original discussion of this surface phase by Perdereau and Rhead [62] and in the subsequent XPD investigation by Thompson and Fadley [279]. On the contrary, at low coverage, adsorption at two-fold sites at the top of the step edges is suggested [279]. Several HMI Cu surfaces are prone to facet into (410) terraces when exposed to O 2 [134,133,293,294].…”

“…For HMI surfaces with closed-packed terraces (i.e. fcc (111) oriented), oxygen adsorption was demonstrated to cause a transition from monoatomic to double steps on various metals (Cu, Pt, Rh, Ni) [63,[279][280][281][282]. On the contrary, for more open stepped surfaces, showing e.g.…”

Oxygen adsorption and oxidation reactions on Au(211) surfaces: Exposures using O2 at high pressures and ozone (O3) in UHV

“…In previous related studies, oxygen-induced step-doubling was observed on the Cu(2 1 1) surface along with a transition from monatomic to double-height steps [58,59]. It was reported that oxygen adsorbed without any change in the 2D order at the surface below 250 K, while the surface started to reconstruct and form double-step structures for h O = 0.05-0.10 ML at temperatures above 300 K. The reconstruction started initially at the step edges, and the double step was stable up to 800 K.…”

Initial sticking probability of O2 on Cu(410)

“…The most recent model, elaborated by Vlieg and coworkers [10] and based on X-ray diffraction experiments and DFT calculations, suggests that for an atomic oxygen coverage H = 0.5 ML the adatoms occupy two non-equivalent sites -at the bottom of the step and in the fourfold hollow in the middle of the (1 0 0) terrace -of the undistorted Cu(4 1 0) surface, thus forming a c(2 Â 2) mesh. On the contrary, at low coverage adsorption at twofold sites at the top of the step edges is suggested [12]. O 2 adsorption on Cu(1 0 0) and Cu(1 1 0) is activated.…”