Network Simulation of a Reversible Electron Transfer under Cyclic Voltammetric Conditions

1992 ◽  
Vol 57 (7) ◽  
pp. 1373-1380 ◽  
Author(s):  
Carlos F. González-Fernández ◽  
Maria T. García-Hernández ◽  
José Horno
Keyword(s):  
Electron Transfer ◽  
Transfer Reaction ◽  
Circuit Simulation ◽  
Computer Time ◽  
Electron Transfer Reaction ◽  
Great Accuracy ◽  
Electrical Circuit ◽  
Cyclic Voltammetric ◽  
Reversible Electron Transfer ◽  
Moderate Cost

Reversible electron transfer reaction of a freely diffusing species has been studied using the network approach. A network model for this process under cyclic voltammetric conditions has been proposed, and a numerical simulation has been made with the help of the electrical circuit simulation routine PSPICE. A great accuracy in simulated voltammograms has been reached with a personal computer at a moderate cost in computer time.

Surface concentrations for a mixed transfer process at an expanding spherical electrode

1966 ◽  
Vol 19 (6) ◽  
pp. 923 ◽  
Author(s):  
CM Gorden ◽  
RF Matlak
Keyword(s):  
Electron Transfer ◽  
Chemical Reaction ◽  
Transfer Process ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Spherical Electrode ◽  
Reversible Electron Transfer ◽  
Irreversible Chemical Reaction

An expression has been derived for the concentration of oxidant and reductant at the surface of an expanding spherical electrode as a function of time and the polarizing potential in the case where a slow irreversible chemical reaction follows a reversible electron transfer reaction under the conditions of a somewhat idealized polarographic system.

Reversible Electron Transfer Reaction between Polyaniline and Thiol/Disulfide Couples

1996 ◽  
Vol 100 (33) ◽  
pp. 14016-14021 ◽  
Author(s):  
Tetsu Tatsuma ◽  
Hiroshi Matsui ◽  
Eiichi Shouji ◽  
Noboru Oyama
Keyword(s):  
Electron Transfer ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Reversible Electron Transfer

Electrode surface concentrations for mixed transfer processes: transfer by diffusion and chemical reaction for a plane electrode

1964 ◽  
Vol 17 (1) ◽  
pp. 16 ◽  
Author(s):  
CM Groden ◽  
GH Aylward ◽  
JW Hayes
Keyword(s):  
Electron Transfer ◽  
Chemical Reaction ◽  
Electrode Surface ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Transfer Processes ◽  
Plane Electrode ◽  
Reversible Electron Transfer ◽  
Irreversible Chemical Reaction

An expression has been derived and tables computed for the concentration of oxidant and reductant at the electrode surface as a function of time and polarizing potential in the case where an irreversible chemical reaction follows a reversible electron transfer reaction under the conditions of a somewhat idealized polarographic system.

scholarly journals Electron transfer studies of a conventional redox probe in human sweat and saliva bio-mimicking conditions

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
P. Krishnaveni ◽  
V. Ganesh
Keyword(s):  
Electron Transfer ◽  
Crystalline Phase ◽  
Liquid Crystalline ◽  
Transfer Reaction ◽  
Electron Transfer Reaction ◽  
Redox Couple ◽  
Liquid Crystalline Phase ◽  
Transfer Reactions ◽  
Redox Probe ◽  
Human Sweat

AbstractModern day hospital treatments aim at developing electrochemical biosensors for early diagnosis of diseases using unconventional human bio-fluids like sweat and saliva by monitoring the electron transfer reactions of target analytes. Such kinds of health care diagnostics primarily avoid the usage of human blood and urine samples. In this context, here we have investigated the electron transfer reaction of a well-known and commonly used redox probe namely, potassium ferro/ferri cyanide by employing artificially simulated bio-mimics of human sweat and saliva as unconventional electrolytes. Typically, electron transfer characteristics of the redox couple, [Fe(CN)6]3−/4− are investigated using electrochemical techniques like cyclic voltammetry and electrochemical impedance spectroscopy. Many different kinetic parameters are determined and compared with the conventional system. In addition, such electron transfer reactions have also been studied using a lyotropic liquid crystalline phase comprising of Triton X-100 and water in which the aqueous phase is replaced with either human sweat or saliva bio-mimics. From these studies, we find out the electron transfer reaction of [Fe(CN)6]3−/4− redox couple is completely diffusion controlled on both Au and Pt disc shaped electrodes in presence of sweat and saliva bio-mimic solutions. Moreover, the reaction is partially blocked by the presence of lyotropic liquid crystalline phase consisting of sweat and saliva bio-mimics indicating the predominant charge transfer controlled process for the redox probe. However, the rate constant values associated with the electron transfer reaction are drastically reduced in presence of liquid crystalline phase. These studies are essentially carried out to assess the effect of sweat and saliva on the electrochemistry of Fe2+/3+ redox couple.

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