Abstract
The reduction of SnO2(110) by 160 eV electron bombardment has been studied by XPS. Oxygen desorption is characterised by an initial cross section of 2.8 × 10−20 cm2. Growth of core peaks due to Sn(0) accompany oxygen loss; this contrasts with reduction under Ar ion bombardment, where only Sn(II) is formed. Plasmon loss satellites 14 eV below the new core peaks identify the Sn(0) as metallic tin. Careful analysis of peak intensities shows that electron beam reduction does produce some Sn(II) in addition to the Sn(0) species.
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