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The Ir(111) surface is oxidized with gas-phase oxygen atoms under vacuum condition to achieve an oxidation level beyond its saturation coverage for chemisorption. Two surface oxides, rutile IrO 2 of (100) domain and corundum Ir 2 O 3 of (001) domain, have been grown at 550K with different oxygen exposure of 3.6×10 5 L and 7.2×10 5 L respectively. The temperature...
Deoxygenation of the IrO 2 (110) surface is investigated at 403–493K, using the core-level spectroscopy and density functional theory (DFT) calculation. The Ir-4f 7/2 signals of 1f-cus-Ir with and without on-top oxygen (O top ) emerge as surface features of the baked-out surface, whose positive and negative shifts in binding energy are in line with the DFT computation results...
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