I have deposited catalytic film of bimetallic Pd-Pt for hydrogen adsorption studies. Is there any technique other than UPS to directly calculate the workfunction of the bimetallic film? Any help is highly appreciated in advanced.
Work function of solid solution alloys is being analytically calculated using three different approaches. All approaches are derived by assuming that the alloys are in equilibrium and therefore surface segregation causes a difference between the surface composition and the bulk composition. An approach based on the image force, an approach based on the dipole layer formed due to electronegativity differences, and a simple surface concentration approach are compared to published experimental results. The image force model has a good agreement with the experiments, while the dipole-layer approach has a poor agreement, challenging the conventional concept of the double layer.
Also, you could try to search theoretical (DF) information from the literature.
Dear Mourya,
Please visit
Prof. Wen-Chin Lin,
Department of Physics,
National Taiwan Normal University,
Taipei, Taiwan
you can visit his website,
I too worked with him. and he is doing on this type of bimetallics.
wish you good luck.
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