Summary
The interaction of O2with Pd(110) has been studied by TDS and XPS at T = 400 K and at pressures PO2 from 2.6x10 -6to 10 Pa. At low exposures in O2(e£1-5 L), an adsorption layer withqof ca.0.5 and with the O1s peak at BE = 529.3 eV has been found to form on the surface. Whenegrows from 5 to 108L, the position and intensity of the oxygen O1s peak remain practically constant. At the same time, as much as 5 mL of oxygen is absorbed according to the TDS data. The results obtained by TDS and XPS indicate that oxygen penetrates deep into the subsurface layers of palladium (³15-20 Å) and is distributed in its bulk in a low concentration.
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Titkov, A., Salanov, A., Segrey V. Koscheev et al. TDS and XPS study of oxygen diffusion into subsurface layers of Pd(110). React Kinet Catal Lett 86, 371–379 (2005). https://doi.org/10.1007/s11144-005-0337-8
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DOI: https://doi.org/10.1007/s11144-005-0337-8