Voltammetry at Microelectrodes

D. E. Tallman, G. Shepherd, and W. J. MacKellar, A Wide Bandwidth Computer Based Potentiostat for Fast Voltammetry at Microelectrodes, J. Electroanal. Chem. 280 327-340 (1990). 

Refs. [i] Bard AJ, FaulknerLR (2001) Electrochemical methods, 2nd edn. Wiley, New York, chaps. 5, 6, 9, 11, 12 [ii] Bard AJ, Mirkin MV (eds) (2001) Scanning electrochemical microscopy. Marcel Dekker, New York [Hi] Oldham KB, Myland JC (1994) Fundamentals of electrochemistry. Academic Press, New York, chap. 8 [iv] Zoski CG (1996) Steady-state voltammetry at microelectrodes. In Vanysek P (ed) Modern techniques in electro analysis. Wiley, New York... 

Markle, W. Speiser, B., Combinatorial microelectrochemistry - part 3. On-line monitoring of electrolyses by steady-state cyclic voltammetry at microelectrodes, Electrochim. Acta 2005, 50, 4916-4925... 

REVERSE PULSE VOLTAMMETRY AT MICROELECTRODES. NEW POSSIBILITIES IN ANALYTICAL CHEMISTRY... 

Zoski CG (1996) Steady-state voltammetry at microelectrodes. In Vanysek P (ed) Modern... 

Notes LSV linear sweep voltammetry. CV cyclic voltammetry, DCP direct current polarogra-phy, MEV steady-state voltammetry at microelectrodes, ChP chronopotentiometry, RDE rotating disc electrode, TEV voltammetry in tubular electrodes, kf and k, rate constants of irreversible follow-up and catalytic reactions, respectively cj, the bulk concentration of the catalyst Z k = kf + k, sum of the rate constants and drop time and transition time, respectively a radius of a hemispherical microelectrode, Xf length of the tubular electrode in the flow direction, co the angular rotation rate, Uf linear flow rate in a TE (7 = RT/(nFv) is the time required for the dimensionless potential shift nFdE/RT at the sweep rate v (Vs" ). 

The specific features of voltammetry at microelectrodes (absence of interferences arising from charging currents, uncompensated resistance and instrumental imperfections, high signal/noise ratio) were emphasized in chapter 2 (section 2.3) of this volume. Various construction modes and application of (ultra)-microelectrodes in chemical and biochemical practice will be treated in chapter 7 of this volume. In this subsection the exploitation of microelectrodes (under steady-state conditions) to investigation of electrode mechanisms and homogeneous reaction kinetics is discussed. 

Oldham KB (1992) Steady-state shape voltammetry at microelectrodes of aibitiary shape. J Electroanal Chem 323 53-76... 

Amatore C, Pebay C, Thouin L, Wang A (2009) Cyclic voltammetry at microelectrodes. Influence of natural convection on diffusion layers as characterized by in situ mapping of concentration profiles. Electrochem Common 11 1269-1272... 

Figure 18.6 Voltammetry at microelectrode of different zinc derivates in PEO the CsCI adduct corresponds to (PEO)9(ZnCl2)o.8 CsCI. For the triflate derivative, the current is magnified by a factor of 10. Reprinted from...

Norton, J., White, H., and Feldberg, S. 1990. Effect of the electrical double layer on voltammetry at microelectrodes. J. Phys. Chem. 281 6772-6780. 

Zhang, B., M.L. Helen, M.F. SantUlo, L. Mellander, and A.G. Ewing. 2011. Temporal resolution in electrochemical imaging on single PC12 cells using amperometry and voltammetry at microelectrode arrays. Anal. Chem. 83(2) 571-577. 

Zoski CG, Bond AM, Colyer CL, Myland JC, Oldham KB (1989) Near-steady-state cyclic voltammetry at microelectrodes. J Electroanal Chem 263(1) 1-21. doi 10.1016/0022-0728(89)80120-2... 

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