Why is the potential of working electrode varied to promote surface adsorption?
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The potential of the working electrode is varied to promote surface adsorption because it affects the electron transfer step and the adsorption characteristics of the starting material, intermediates, or the product of the electrode reaction . By changing the electrode potential, the adsorption behavior of molecules on the electrode surface can be modulated. For example, in the study of picolinic acid, isonicotinic acid, and nicotinic acid on a silver electrode, it was found that the adsorption behavior changed with varying potential values . Additionally, the potential-dependent surface enhanced Raman scattering (SERS) of these acids on a silver electrode revealed different surface geometries at different potentials . The adsorption-desorption coefficients and the length of Debye of the ionic solution also play a role in determining the electrode potential . Overall, varying the potential of the working electrode allows for control over surface adsorption and can influence the behavior of molecules on the electrode surface.
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24 Citations | The paper does not provide an explicit answer to why the potential of the working electrode is varied to promote surface adsorption. |
14 Citations | The potential of the working electrode is varied to promote surface adsorption because it can directly influence surface interactions and induce protein desorption. |
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