Deposition of Ru Adatoms on Pt Using Organometallic Chemistry: Electro‐oxidation of Methanol, Ethanol, 1,2‐Ethanediol, and D‐Glucose over a Surface Optimized for Oxidation of Methanol

A surface with 10% Ru adatoms was prepared by hydrogenating ( 1 , COD is 1,5‐cyclooctadiene) over Pt. The onsets of stabilized potentiodynamic oxidation for several fuels ([fuel] = = 0.5 M, sweep range 0.025 to 0.60 V (vs. SHE), 22°C) were ethanol (∼0.2 V), methanol (∼0.3 V), and 1,2‐ethanediol (∼0.45 V). The activity of D ‐glucose was low under these conditions. The ratio of specific current densities for potentiostatic oxidation (30 min, [fuel] = = 0.5 M, E = 0.4 V, 22°C) over and over Pt were methanol (42) 1,2‐ethanediol (4.0), ethanol (2.3), and D ‐glucose (1.8).