Ferrocyanide, cyclic voltammetry

Figure 8. U, values for the (lll)-face of n-GaP (dark) at various concentrations of the ferricyanide/ferrocyanide couple (equal concentrations) (9) 0M (O) 0.005M (A) 0.05M (A) 0.4M E(Ox/R) redox potential of the redox couple determined by the cyclic voltammetry (ij/) the Us for a p-GaP in the absence of...

Their typical conduction behavior, as probed by cyclic voltammetry of the coated electrodes in the presence of ferrocyanide ions (122,250), is seen in Fig. 32. Note that the characteristic electrochemical response of ferrocyanide, observed at 0.36 V using conventional bare electrodes, disappears when the surface is coated... 

The redox reactions for supported BLMs containing vinylferrocene as an electron mediator have been investigated using cyclic voltammetry. The results have shown the following, (i) Ferrocene can be very easily immobilized in the lipid bilayer on the surface of a metallic wire (s-BLM) system. This demonstrates that the s-BLM system offers a novel approach to electrode modification by simple immobilization of compounds within BLM. (ii) Ferrocene in a BLM increases the sensitivity to the potassium ferri/ferrocyanide ion by about two orders of magnitude in comparison to that of the platinum electrode [79]. 

Han and coworkers [38] determined the phase behavior of the ternary system consisting of [bmim][PFJ,TX-100, and water at 25 °C. By cyclic voltammetry method using potassium ferrocyanide, K Fe(CN)g, as the electroactive probe, the water-in-[bmim][PFJ, bicontinuous, and [bmim][PFJ-in-water microregions of the microemulsions were identified (Fig. 16.7). The hydrodynamic diameter of the [bmim] [PFJ-in-water microemulsions is nearly independent of the water content bnt increases with increasing [bmim] [PF ] content due to the swelling of the micelles by the IL. Sarkar and coworkers [39-41] reported the solvent and rotational relaxation studies in [bmim][PFJ-in-water microemulsions and water-in-[bmim][PFJ microemulsions using different types of probes, coumarin 153 (C-153), coumarin 151 (C-151), and coumarin 490 (C-490). The solvent relaxation time is retarded in the IL-in-water microemulsion compared to that of a neat solvent. The retardation of solvation time of water in the core of the water-in-IL microemulsion is several thousand times compared to pnre water. Nozaki and coworkers [42] reported a broadband dielectric spectroscopy study on a microemnlsion composed of water. 

One simple way of characterization of CNT/MN4 electrodes using electrochemical techniques like cyclic or linear voltammetry is using a well-known redox probe, for example, the couple ferri/ferrocyanide, Fe(CN)6 /Fe(CN)6. The MWCNT-BPPG... 

---