Abstract
Using FEM, work function measurements were carried out on kinked surface areas of Pt and Rh ({210}, {531}Rh, {321}, {520}, {310}, {320}, {430} and {741}Pt). The work function change after saturated CO adsorption at room temperature, Δø CO, increases with decreasing work function of the corresponding clean adsorbent area, ø k. The dependence appears to be linear. The slope was identified as the ratio of two surface dipole moments, μ CO μ Me . (μ CO dipole moment (per molecule) of the CO adlayer adsorbed on kink atoms; μ Me dipole moment of the metal kink atom.) The experimental values of the ratio are close to unity.
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