Spectroelectrochemistry semi-infinite linear diffusion

Exhaustive electrolysis can be achieved within a short period of time in spectroelectrochemistry under soni-infinite diffusion conditions, even in the absence of convective mass transport. In these cells, the solution laya is thicker than that in the OTTLE cell and on apphcation of potential the diffusion layer does not extend over the entire optical path. 

Assuming the product P is stable, this integral represents the total concentration of P per unit area, which is equal to QInFA. Q, the charge passed during the electrolysis, is described by the integrated Cottrell or Anson equation. Therefore 

---

Figure 17.1.2 A Cell for transmission spectroelectrochemistry involving semi-infinite linear diffusion. Light beam passes along vertical axis. [Reprinted from N. Winograd and T. Kuwana, Electroanal. Chem., 7, 1 (1974), by courtesy of Marcel Dekker, Inc.] B Optically transparent thin-layer system front and side views, (a) Point of suction application in changing solutions (b) Teflon tape spacers (c) 1 X 3 in. microscope slides (d) test solution (e) gold minigrid, 1 cm high ...

Figure 3 Sandwich cell for transmission measurement under semi-infinite linear diffusion conditions. Reprinted by courtesy of Marcel-Dekker, Inc. from Kuwana T and Winograd N (1974) Spectroelectrochemistry at optically transparent electrodes. I. Electrodes under semi-infinite diffusion conditions. In Bard AJ (ed) Electroanalytical Chemistry. A Series of Advances, Vol 7, pp 1-78. New York Marcel-Dekker.

---