Thin film pyrolytic carbon electrodes: A new class of carbon electrode for electroanalytical sensing applications
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- 作者：Gareth P. Keeley ; Niall McEvoy ; Shishir Kumar ; Nikos Peltekis ; Marcel Mausser ; Georg S. Duesberg
- 关键词：Pyrolytic carbon ; Voltammetry ; Impedance spectroscopy ; Electro-catalysis ; Materials science
- 刊名：Electrochemistry Communications
- 出版年：2010
- 出版时间：August 2010
- 年：2010
- 卷：12
- 期：8
- 页码：1034-1036
- 全文大小：404 K
文摘
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(NH<sub>3sub>)<sub>6sub><sup>3+/2+sup>, Fe(CN)<sub>6sub><sup>3−/4−sup> and Fe<sup>3+/2+sup> 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.