Archives for Chemistry Experiments of Ruthenium(III) chloride

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In this work, a-CNx films prepared by DC magnetron sputtering on stainless steel substrate have been investigated as electrode materials. While their wide potential window was confirmed as a property shared by boron doped diamond (BDD) electrodes, their electrochemical activity with respect to fast and reversible redox systems, [Ru(NH3)6]3+/2+, [Fe(CN) 6]3-/4- and [IrCl6]2-/3-, was assessed by Electrochemical Impedance Spectroscopy (EIS) after cathodic or anodic electrochemical pre-treatments or for as grown samples. It was shown for the three systems that electrochemical reactivity of the a-CNx films was improved after the cathodic pre-treatment and degraded after the anodic one, the apparent heterogeneous rate constant k0app being decreased by at least one order of magnitude for the latter case. A high k0app value of 0.11 cm s-1 for [IrCl6]2-/3- was obtained, close to the highest values found for BDD electrodes.

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Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI