Surface and materials electrochemistry: adsorption, reduction, oxidation, and corrosion phenomena

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OBJECTIVES AND APPROACH. I propose experimental and theoretical studies on the adsorption of prochiral/chiral organic molecules on achiral/chiral Pt(hkl) electrodes, and the mechanism and kinetics of their electrocatalytic hydrogenation (ECH). I will perform T-dependent studies and will determine the surface coverage of hydrogen (H), anions (AN), and organic molecules (ORG). I will determine thermodynamic state functions for H and ORG adsorption. The products of ECH, their yields, and enantiomeric excesses will be examined using vapor-phase chromatography, nuclear magnetic resonance, and circular dichromism. I will investigate the under-potential deposition (UPD) of Ag and Cu on Pt(hkl), Au(hkl) and Rh(hkl) electrodes. The surface coverage of Ag and Cu will be examined by application of electrochemical techniques. I will conduct T-dependent cyclic-voltammetry (CV) studies and perform theoretical data analysis to determine the substrate-adsorbate bond energy. I will analyze the influence of electrochemical interface on the interfacial bonding of metals. I will investigate the biocorrosion and biocompatibility of colored passive layers on titanium-molybdenum alloy (TMA) and nickel-titanium alloy (NiTi) in simulated body fluids. I will also study the adsorption of model proteins on these materials using complementary physical and analytical techniques.