Application of Power Spectra Patterns in Fourier Transform Square Wave Voltammetry To Evaluate Electrode Kinetics of Surface-Confined Proteins

2006 ◽  
Vol 78 (9) ◽  
pp. 2948-2956 ◽  
Author(s):  
Barry D. Fleming ◽  
Nicola L. Barlow ◽  
Jie Zhang ◽  
Alan M. Bond ◽  
Fraser A. Armstrong
Keyword(s):  
Fourier Transform ◽  
Square Wave Voltammetry ◽  
Power Spectra ◽  
Electrode Kinetics ◽  
Square Wave ◽  
Wave Voltammetry ◽  
Kinetics Of

scholarly journals Theory of reverse scan square-wave voltammetry influenced by the kinetics of reactant adsorption

2010 ◽  
Vol 8 (3) ◽  
pp. 513-518 ◽  
Author(s):  
Milivoj Lovrić ◽  
Šebojka Komorsky-Lovrić
Keyword(s):  
Rate Constant ◽  
Square Wave Voltammetry ◽  
Electrode Reaction ◽  
Peak Current ◽  
Kinetics Of Adsorption ◽  
Square Wave ◽  
Wave Voltammetry ◽  
Reverse Scan ◽  
The Relationship ◽  
Kinetics Of

AbstractA model of electrode reaction complicated by slow adsorption of the reactant is developed for square-wave voltammetry with inverse scan direction. The relationship between the dimensionless net peak current and the logarithm of dimensionless rate constant of adsorption is a curve with a minimum and a maximum. For this reason the ratio of real net peak current and the square-root of frequency is a non-linear function of the logarithm of frequency and exhibits either a maximum or a minimum. The frequency of extreme serves for the estimation of the rate constant: log(k ads /D 1/2 ) = log(k*ads )crit + 0.5 log f crit , where (k*ads )crit is a critical dimensionless rate constant of adsorption. Square-wave voltammetry is sensitive to the kinetics of adsorption if k ads 2 cm s−1

Fourier transform square-wave voltammetry

1994 ◽  
Vol 373 (1-2) ◽  
pp. 157-165 ◽  
Author(s):  
Andrzej Baranski ◽  
Agata Szulborska
Keyword(s):  
Fourier Transform ◽  
Square Wave Voltammetry ◽  
Square Wave ◽  
Wave Voltammetry

Cathodic processes of neodymium(iii) in LiF–NdF3–Nd2O3 melts

2016 ◽  
Vol 190 ◽  
pp. 339-349 ◽  
Author(s):  
Chao Huang ◽  
Xiaolong Liu ◽  
Yuan Gao ◽  
Shizhe Liu ◽  
Bing Li
Keyword(s):  
Mass Transfer ◽  
Cyclic Voltammetry ◽  
Electrochemical Reduction ◽  
Square Wave Voltammetry ◽  
Square Wave ◽  
Potentiostatic Electrolysis ◽  
Reduction Potentials ◽  
Wave Voltammetry ◽  
Cathodic Processes ◽  
Kinetics Of

In this paper, cyclic voltammetry and square wave voltammetry are applied to characterize the cathode processes of neodymium ions on a W electrode in LiF–NdF3 melts with or without the metal Nd. The results indicate that neodymium ions in the LiF–NdF3 (2 wt%) melt are reduced in two steps, i.e. Nd3+ → Nd2+ and Nd2+ → Nd0, corresponding to starting reduction potentials of 0.35 V vs. Li+/Li and 0.1 V vs. Li+/Li, respectively. The Nd3+ → Nd2+ process is controlled by mass transfer and the Nd2+ → Nd0 process is controlled by both an interfacial step and mass transfer. But in the LiF–NdF3 melt with excess metal Nd equilibrium, the kinetics of the above two processes are controlled by mass transfer. After potentiostatic electrolysis at 0.35 V in the LiF–NdF3–Nd2O3 melt NdF2 is formed on the Mo cathode, and metallic Nd is obtained by potentiostatic electrolysis at 0.1 V in the LiF–NdF3–Nd2O3–Nd melt, which validates the above electrochemical reduction results.

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