Study of CO adsorption on Sn/Rh(1 1 1)

Hanyš, P.; Janeček, Petr; Šutara, F.; Tsud, Nataliya; Matolín, Vladimı́r; Nehasil, V.

doi:10.1016/j.susc.2007.04.021

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…It is shifted by −0.51 eV with respect to the bulk component of the clean Rh(111) crystal. This shift is comparable to that observed in [12] and the same as in our former study [9] after annealing at 800 K, where the partially ordered Sn-Rh alloy was formed in several layers. Decomposition of Sn oxide at 970 K was accompanied by the formation of ( √ 3 × √ 3)R30 • Sn-Rh surface alloy revealed by LEED.…”

Section: Thermal Stability Of the Oxidized Overlayersupporting

confidence: 91%

“…The results presented in this paper are related to our previously published work [9] where we studied a formation of ordered ( √ 3× √ 3)R30 • Rh-Sn alloy stimulated by sample annealing and adsorption of CO on the Sn/Rh(111) surface in dependence on the surface structure.…”

Section: Introductionsupporting

confidence: 58%

“…Therefore we used a slightly elevated temperature (420 K) during the following O 2 exposures to enhance the diffusion of Sn and oxygen and thereby the oxidation of the Sn layer. We did not use an even higher temperature to avoid substantial Rh-Sn alloying, which takes place above 750 K [9,12]. However, the partial diffusion of Sn into the Rh(111) occurred even at 300 K, as was shown in section 3.1.…”

Section: Oxidation Of Sn Overlayersmentioning

confidence: 99%

See 2 more Smart Citations

Photoemission and LEED study of the Sn/Rh(111) surface—early oxidation steps and thermal stability

Hanyš¹,

Píš²,

Mašek³

et al. 2011

J. Phys.: Condens. Matter

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We have deposited two monolayers of Sn onto Rh(111) single crystal. After the deposition, no ordered structure was revealed by low energy electron diffraction (LEED). We oxidized the obtained system in a low-pressure oxygen atmosphere at 420 K. The oxidized sample was then gradually heated to study the thermal stability of the oxide layer. We characterized the system by synchrotron radiation stimulated photoelectron spectroscopy and LEED. Valence band and core level photoelectron spectra of rhodium, tin and oxygen were used to study the oxidation of the Sn-Rh(111) surface and its behaviour upon annealing. A low stoichiometric oxide of Sn was created on the surface. The oxidation process did not continue towards creation of SnO(2) with higher oxygen dose. The annealing at 970 K caused decomposition of the surface oxide of Sn and creation of an ordered (√3 × √3)R30° Sn-Rh(111) surface alloy.