Beneficial role of surfactants in electrochemistry and in the modification of electrodes

Polarographic Behavior of Nicotinamide in Surfactant Media and Its Determination in Cetyltrimethylammonium Bromide Surfactant System

“…E-mail: aksrivastava@chem.mu.ac.in; akschbu@yahoo.com coefficients of electrode processes, thus changing the stability of electrogenerated intermediates and electrochemical products, [16][17][18][19][20][21][22] which becomes an advantage for its use in electrochemistry and modification of electrode. 23 We have reported voltammetric behavior of certain vitamins 24 (viz. menadione 25 and a-tocopherol 26 ) in surfactant media.…”

Electrode Modified with Cobalt Cyclohexylbutyrate for the Determination of Low Molecular Weight Thiol Group Bearing Compounds Using Catalytic Stripping Voltammetry

“…In the case of modified electrodes surfactants can interact with species undergoing redox transformation (including electrochemical reaction intermediates), may influence the solubility product of water insoluble modifier or they can adsorb on the specific sites on the active electrode surface. This event can have both inhibiting (blocking the active sites on the electrode surface) as well as enhancing effect on the electrode reaction (caused by partitioning of the redox active species in the layer of adsorbed surfactant molecules) [36,37]. We have found that the addition of Tween 40 surface active agent affects the performance of the Co(CHBA) 2 modified electrode.…”

Simple and Sensitive Electroanalytical Method for the Determination of Ascorbic Acid in Urine Samples Using Measurements in an Aqueous Cationic Micellar Medium

“…It can be cited that the solubilization of electrochemically active compounds in micellar aggregates changes the redox potential, the charge transfer and the diffusion coefficients of the electrode processes, as well as the stability of electrogenerated intermediates and electroactive products derived from electrochemical reactions. [23][24][25][26] Despite this, a few reports concerning the application of micellar systems have pointed out the electrochemical determination of important biological molecules like AA.…”