Reactivity of Pd and Sn adsorbates on plasma and thermally oxidized SnO2(110)
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2012, Sensors and Actuators, B: ChemicalCitation Excerpt :It is a big decrease, because according to Batzill et al. [189] estimations, the change of the work function during oxidation/reduction of the SnO2 surface does not exceed 1 eV. According to Cavicchi and Semancik [190] band bending on oxidized SnO2 samples may achieve up to 0.7 eV for thermal treatment (700 K) and ∼0.8 eV after RT plasma treatment. The reason of φb drop could be a decrease of surface charge, conditioned by the decreasing of chemisorbed oxygen concentration on the SnO2 surface.
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2006, Journal of Power SourcesCitation Excerpt :A slight shift in the Pd 3d5/2 peak (∼0.5 eV to higher binding energy) of the Pt-Pd/Al2O3 catalyst with respect to that of the Pd/Al2O3 catalyst was observed (not shown). The observed differences on the supported Pd and Pt-Pd surfaces may be due to the oxidation of Pd on the surface [19]. This positive shift may arise from changes in the electronic relaxation energy of Pd levels (220) in the presence of platinum, as suggested by Dufaux and Naccache [20].