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Five slide on cyclic voltammetry

Five slide on cyclic voltammetry. Chip Nataro Lafayette College. Experimental setup. Inert gas inlet. Working electrode. Reference electrode. Auxiliary electrode. Stir bar. Experimental control. Initial, switching and final potentials Scan rate Number of sweeps Concentrations

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Five slide on cyclic voltammetry

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  1. Five slide on cyclic voltammetry Chip Nataro Lafayette College

  2. Experimental setup Inert gas inlet Working electrode Reference electrode Auxiliary electrode Stir bar

  3. Experimental control • Initial, switching and final potentials • Scan rate • Number of sweeps • Concentrations • Temperature • Electrodes

  4. General experiment

  5. Simple electrode mechanisms • Reversible oxidation

  6. Cyclic voltammogram

  7. Cyclic voltammogram

  8. Cyclic voltammogram Epc Peak separation = Epa - Epc Eo = (Epa + Epc)/2 Epa

  9. Simple electrode mechanisms • Reversible oxidation • Chemically irreversible oxidation

  10. Cyclic voltammogram S. L. Martinak, L. A. Sites, S. J. Kolb, K. M. Bocage, W. R. McNamara, A. L. Rheingold, J. A. Golen and C. Nataro, J. Organomet. Chem.2006, 691, 3627.

  11. Simple electrode mechanisms • Reversible oxidation • Chemically irreversible oxidation • Chemically reversible oxidation

  12. Cyclic voltammogram J. H. L. Ong, C. Nataro, J. A. Golen, and A. L. Rheingold, Organometallics, 2003, 22, 5027.

  13. Additional sources • Geiger, W. E. Organometallics2008, 26, 5738. • Mabbott, G. A. J. Chem. Educ. 1983, 60, 697. • Van Benschoten, J. J.; Lewis, J. Y.; Heineman, W. R.; Roston, D. A.; Kissinger, P. T. J. Chem. Educ.1983, 60, 772. • Geiger, W. E. in Laboratory Techniques in Electroanalytical Chemistry, 2nd Ed., Kissinger, P. T., Heineman, W. R. Eds.; Marcel Dekker, Inc.: New York, 1996, 683.

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