Gareth P. Keeley, Niall McEvoy, Shishir Kumar, Nikos Peltekis, Marcel Mausser, Georg S. Duesberg, Thin film pyrolytic carbon electrodes: A new class of carbon electrode for electroanalytical sensing applications, Electrochemistry Communications, 12, 8, 2010, 1034-1036
Electrochemistry Communications 12 8
This communication describes the electrochemical properties of thin pyrolytic carbon (PyC) films created using a reliable, non-catalytic chemical vapour deposition (CVD) process. After deposition, the electron transfer characteristics of the films are optimised using a simple oxygen plasma treatment. The redox probes Ru(NH3)63+/2+, Fe(CN)63−/4− and Fe3+/2+ are employed to demonstrate that the resulting material is endowed with a large electrochemical surface area and outstanding electron transfer properties. Atomic force microscopy (AFM), Raman and X-ray photoelectron spectroscopy (XPS) are used to elucidate the morphology and chemical composition of the electrode surfaces. This material represents a new class of carbon electrode, and its large densities of edge-plane sites and oxygenated functionalities make it an ideal candidate for electrochemical sensor applications.
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