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Electrochemical cyclovoltammetry experiments were carried out on the platinum surface of a platinum–silicon thin‐film device in sulfuric acid. The internal electronic barrier of the device allows the separation of ground state and excited state charge transfer events released by the electrochemical surface reaction. The traces of the device current show similar features as the cyclovoltammogram and...
Thin skin: Pt‐alloy catalysts, such as annealed Pt3Ni(111) (see STM image; color changes mark a single atomic step), with a surface layer of pure platinum, termed a Pt‐skin surface, have very different electrochemical adsorption properties to monometallic Pt. The adsorption of hydrogen is largely suppressed (see CV, (—) Pt3Ni(111)‐skin versus (••••) Pt(111)), making it hard to determine the electrochemically...
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