Voltammetry cyclic staircase

The Model 384B (see Fig. 5.10) offers nine voltammetric techniques square-wave voltammetry, differential-pulse polarography (DPP), normal-pulse polar-ography (NPP), sampled DC polarography, square-wave stripping voltammetry, differential pulse stripping, DC stripping, linear sweep voltammetry (LSV) and cyclic staircase voltammetry. 

The validity of the theoretical predictions is yet not experimentally rigorously confirmed by a model experimental system, although the theory has a safe background in the theory and experiments of similar potential ptrlse techniques as well as cyclic staircase voltammetry. 

Cyclic Staircase Voltammetry and Cyclic Voltammetry at Electrodes... 

If the potential is inverted at a given value (inversion or final potential) until the initial potential is reached again, the two above techniques are denoted Cyclic Staircase Voltammetry (CSCV) and Cyclic Voltammetry (CV), respectively (see Scheme 5.3). The potential waveform in CV can be written as a continuous function of time... 

In this section, general Eq. (5.23) will be applied to Cyclic Staircase Voltammetry (CSCV) and Cyclic Voltammetry (CV). Note that for CSCV the length of each potential pulse is identical, i.e., i - Ti = = z p z and the current is usually measured at the end of the application of each pulse in such a way that the time elapsed between the measurement of mth and pth currents is given by Eq. (5.30). 

This chapter offers a study of the application of the multipulse and sweep techniques Cyclic Staircase Voltammetry (CSCV) and Cyclic Voltammetry (CV) to the study of more complex electrode processes than single charge transfer reactions (electronic or ionic), which were addressed in Chap. 5. 

In this section, the general analytical expression for the current-potential response (Eq. (6.15)) is particularized for the electrochemical techniques Cyclic Staircase Voltammetry (CSCV) and Cyclic Voltammetry (CV). Thus, the expression for the CSCV and CV currents of multi-electron processes at electrodes of any geometry and size is... 

Appendix J. C++ Programs to Calculate the Response of Two-Electron Reversible Electrode Processes in Cyclic Staircase Voltammetry and Square Wave Voltammetry at Disc, (Hemi)Spherical, and Cylindrical Electrodes of Any Radius... 

C + + PROGRAM TO CALCULATE THE RESPONSE OF A TWO-ELECTRON REVERSIBLE ELECTRODE PROCESS IN CYCLIC STAIRCASE VOLTAMMETRY AT DISC, (HEMI) SPHERICAL AND CYLINDRICAL ELECTRODES OF ANY RADIUS RO /... 

Cyclic staircase voltammetry — Cyclic voltammetry using a staircase waveform (instead of a constant dV / d( ). The current response will be a series of transients which are measured by Fourier transform [i] or by sampling near the end of each (staircase) step [ii] thereby, in principle, eliminating or at least minimizing the - doublelayer charging component. The responses are similar to... 

The use of a potential-step technique such as cyclic staircase voltammetry represents a simple alternative to Ichise s method (j0 of obtaining information on both adsorption and electron transfer kinetics. The current decay immediately after a step is primarily capacitive while current at later times is almost totally due to electron transfer reactions. Thus, by measuring the current at several times during each step and by changing the scan rate, information on both the kinetics of the electrode process and the differential capacity can be obtained with a single sweep. 

Electrode potentials relative to the particular reference electrode are conveniently measured as the half-wave potential 1/2 in cyclic voltammetry (CV) [15,16, 20, 24, 36-48] or cyclic staircase voltammetry [49-51], or by differential pulse voltamme-... 

A. Molina, C. Serna, and J. Gonzalez. General analytical solution for a catalytic mechanism in potential step techniques at hemispherical microelectrodes Apphcations to chronoamperometry, cyclic staircase voltammetry and cyclic linear sweep voltammetry, J. Electroanal. Chem. 454, 15-31 (1998). 

---