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Chemically Modified Electrodes: VIII . The Interaction of Aqueous with Native and Silanized Electrodes
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1979
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EngineeringElectrode-electrolyte InterfaceModified ElectrodesChemistryChemical EngineeringOrganic ElectrochemistryDoped FilmsElectrochemical InterfaceElectrode Reaction MechanismMaterials ScienceSurface ElectrochemistryAlkylamine SilaneElectrochemistrySubsurface RuElectronic MaterialsSurface ScienceApplied PhysicsSilanized ElectrodesElectroanalytical SensorThin FilmsElectrochemical Surface Science
electrodes in the form of thin, highly doped films on glass were exposed to aqueous solutions and examined electrochemically and by x‐ray photoelectron spectroscopy (XPES). For both native and silanized with an alkylamine silane, the Ru is strongly chemisorbed and yields a broad chemically reversible surface wave near 0V and an irreversible oxidation wave near +0.85V. These are interpreted as and processes, respectively. XPES sputtering experiments reveal the existence of subsurface Ru at depths similar to observed O/Sn nonstoichiometry.