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Five slide on cyclic voltammetry Chip Nataro Lafayette College.

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Presentation on theme: "Five slide on cyclic voltammetry Chip Nataro Lafayette College."— Presentation transcript:

1 Five slide on cyclic voltammetry Chip Nataro Lafayette College

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

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

8 E pa E pc Peak separation = E pa - E pc E o = (E pa + E pc )/2

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. Organometallics 2008, 26, 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, 2 nd Ed., Kissinger, P. T., Heineman, W. R. Eds.; Marcel Dekker, Inc.: New York, 1996, 683.


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