Voltammetry in the presence of ultrasound: A novel sono-electrode geometry

Current topics on sonoelectrochemistry

“…During electroplating experiments, they analyzed the alternative approach to apply ultrasound directly to the cathode, rather than the excitation of the electrolyte solution itself. In the same way, the idea of a specific design of a sonoelectrochemical reactor has been previously reported in literature by Reisse et al [91] and different approaches have been reported [92][93][94]. The present situation is that there is only one sonoelectrochemical device in the market [95].…”

Sonoelectrochemically Enhanced Electrocatalytic Processes: The Pb(IV) Catalyzed Cleavage of 1,2-cis-Cyclopentanediol at Graphite and Glassy Carbon Electrodes

“…For cavitation (microscopic jets of liquids hitting the electrode surface) as well as for other macroscopic 'streaming' type processes the expected behavior would be a diffusion layer thickness which is not constant but related to the cube root of the diffusion coefficient, D 1= 3 , as is observed commonly in hydrodynamic voltammetry [22]. This type of nonstagnant diffusion layer thickness has been confirmed experimentally for sonoelectrochemical processes in aqueous solutions [16] and in the case of processes in the 'side-on' geometry [18]. For processes in 'face-on' geometry and in acetonitrile, however, a linear relation between limiting current and diffusivity has been established [21].…”

Ultrasound in Electrochemical Degradation of Pollutants

“…This potentiostatic control can be eliminated by insulating the transducer from the probe with a Teflon ® disk, as demonstrated in Figure 1B. Additionally, the experiments with the system of Figure 1B, and also with other configurantions, can be conduced using alternative geometric arrangements of the tip in relation to the working electrode, (a) face on geometry (Compton et al, 1994;Compton et al, 1995a;Compton et al 1995b;Lee et al, 1995): the ultrasound tip is placed in front of the working electrode; (b) side on geometry (Eklund et al, 1996): the working electrode is placed perpendicularly to the ultrasond tip and (c) the ultrasound tip can be used with working electrode (sonotrode) (Compton et al, 1996b).…”