Beilstein J. Nanotechnol.2014,5, 1349–1356, doi:10.3762/bjnano.5.148
This study addresses the electrochemical surface faceting and restructuring of Ir(210) singlecrystal electrodes. Cyclic voltammetry measurements and in situ scanning tunnelling microscopy are used to probe structural changes and variations in the electrochemical behaviour after potential cycling of Ir
anisotropically in a preferred direction and reach a height of about 5 nm after 4 h of cycling. The structural changes are reflected in variations of the electrocatalytic activity towards carbon monoxide adlayer oxidation.
Keywords: CO adlayer oxidation; cyclic voltammetry; Ir(210) singlecrystal; potential
to study the electrocatalytic activity of restructured Ir(210) surfaces compared to non-restructured Ir(210).
Experimental
A cylindrical Ir(210) singlecrystal (4 mm in diameter and thickness, MaTecK Jülich, Germany) was used both for electrochemical and in situ STM investigations. Before each
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Figure 1:
Cyclic voltammograms of Ir(210), which was annealed and cooled in a N2 + CO mixture, after anodic s...