Langmuir, Vol.26, No.3, 2124-2129, 2010
Use of Model Pt(111) Single Crystal Electrodes under HMRDE Configuration To Study the Redox Mechanism for Charge Injection at Aromatic/Metal Interfaces
The electrochemical reactivity of hydroquinone-derived, catechol-derived and benzene-derived adlayers is compared Lit Pt(111) single-crystal surfaces (i) Under stagnant hanging meniscus (HM) configuration and (ii) Under hydrodynamic conditions imposed by combining the HM configuration with the rotating disk electrode (RDE) that merge In the so-called HM RDE technique. For the three Cases Studied, the results suggest that reductive desorption of the adlayers can be accomplished in aqueous 0.5 M H2SO4 Solutions within the time frame of a single cathodic scan, i.e. the first half of a single CV experiment, The results highlight the simplicity of exploiting the hydrodynamic conditions imposed by RDE as a convenient electroanalytical strategy to elucidate controversies regarding whether desorption takes place or not during electrode processes Studied under the HM Configuration.