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The University of Southampton

Plasma Electrochemistry: Voltammetry in Flame Plasma Electrolyte Seminar

11 March 2014
Building 27, Room 2003 Chemistry University of Southampton Southampton SO17 1BJ

For more information regarding this seminar, please email Dr Andrew Hector at .

Event details

Dr Daren J. Caruana presents a seminar as part of the electrochemistry group seminar series.

Often not regarded to be of importance in the electrochemical field; gases had long been labelled as ideal electrical insulators. However, gaseous plasmas conform to the characteristics of electrolytes with their ability to conduct electricity due to the presence of stable mobile cationic and anionic species. The ionised gaseous environment of a flame acts as a dilute electrolyte, enabling us to apply well-established principles of the liquid phase to the gas phase. In this seminar some recent unpublished results will be presented showing reproducible redox processes using conventional cyclic voltammetry in an operational potential window between 1 to -9 V. The measurements were enabled through the development of a new reference electrode, composed of yttria stabilised zirconia (YSZ) which maintains a stable potential at 1100 K. In this paper we focus on developing a phenomenological understanding of electron transfer at the solid/gas interface, using cyclic voltammetry.

Speaker information

Dr Daren J. Caruana, UCL. Daren J. Caruana has an interdisciplinary background, having read Biochemistry at the University of Warwick, and then completing a PhD in Electrochemistry under the supervision of Prof. P.N. Bartlett at the University of Southampton. He was awarded the Marlow Medal and prize (2004) for the development of gas phase electrochemistry and is now a Reader in Physical Chemistry at the Department of Chemistry at UCL. His research interests are focused towards understanding the electrochemical properties of plasmas and extending electrochemical science to the gas phase through new applications, including electrochemical sensing in the gas phase.

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