Electrochemical reduction of p-nitrosodiphenylamine in, a cationic micellar system

The Effect of Surfactant Adsorption at a Glassy Carbon Electrode on Electrochemical Oxidation of Propyl Gallate

“…Surfactant behaviour in solution, i.e., aggregation, as well as adsorption and organization on the electrode surface, influences the redox reaction of electroactive species, changing their redox potential E pa and the corresponding peak current I pa [2][3][4][5][6][7]. The significant shift of the oxidation potential and the change in the peak current may be associated with surfactant adsorption on the electrode surface.…”

“…Among different electrochemical methods, cyclic voltammetry has been widely used to investigate the redox behaviour of different antioxidants in various media [2][3][4][5][6][7]. From these investigations it follows that the antioxidant activity is strongly dependent on the reaction environment.…”

Influence of CTAB on the electrochemical behavior of dopamine and on its analytic determination in the presence of ascorbic acid

“…Kaifer and colleagues [17,18] reported significant changes in the redox potential and peak current of methylviologen in sodium dodecyl sulfate, SDS, micellar solution. Davidovic et al, [19] found that the rate of electrochemical reduction of p-nitrosodiphenylamine decreased in the presence of cetyltrimethylammonium bromide, CTAB, micellar solution while [15] Wen et al, [20,21] have found recently that the oxidation potential, the electron transfer rate constant and diffusion coefficient of ascorbic acid and its lipophilic derivatives are significantly influenced by CTAB and SDS micelles. Surfactants have also been employed to improve selectivity and sensitivity of electrochemical analysis [16,22,23].…”

“…Further, the molecules can be strongly adsorbed at solid/solution interfaces such as electrodes [15]. The micellar effect on the electrochemical response of several compounds has turned out to be quite interesting, because the molecules seem to facilitate the adsorption and solubilization of various different electrochemically active compounds in the micellar aggregates; this has been associated to assorted, mostly interesting and relevant changes, like in the redox potential of the analytes present, in the charge transfer and diffusion coefficients of electrode processes, as well as changes in the stability of electrogenerated intermediates and electrochemical products [16][17][18][19][20][21][22][23]. For example, Rusling [16] has successfully used micelles and other surfactant microstructures to catalyze the electrochemical dehalogenation of organic halides.…”

Electrochemical study of a cetylpyridinium bromide/glutathione mixed membrane electrochemically deposited at polycrystalline Ag electrodes

“…Surfactants adsorbed on the electrode surface change the characteristics of the metal|solution interface, making it easy for some organic compounds to adsorb at the electrode. Sometimes, adsorbed surfactants influence their voltammetric behavior, for example, they can increase the peak heights of some organics, cause the peak potential to shift and make the electrochemical process more reversible [15][16][17][18].…”