Application of the superposition principle to the study of a charge transfer reaction in cyclic chronopotentiometry. Part II

1996 ◽  
Vol 20 (1) ◽  
pp. 169-181 ◽  
Author(s):  
A. Molina ◽  
J. Gonz�lez ◽  
C. Serna ◽  
L. Camacho
Keyword(s):  
Charge Transfer ◽  
Transfer Reaction ◽  
Superposition Principle ◽  
Charge Transfer Reaction ◽  
A Charge

Electrochemical reactions at PbO2 electrodes. Part II. The exchange reaction at β-PbO2 electrodes

1967 ◽  
Vol 45 (18) ◽  
pp. 2045-2049 ◽  
Author(s):  
N. A. Hampson ◽  
P. C. Jones ◽  
R. F. Phillips
Keyword(s):  
Charge Transfer ◽  
Transfer Reaction ◽  
Adsorbed Layer ◽  
Hydrogen Ion ◽  
Charge Transfer Reaction ◽  
Galvanostatic Polarization ◽  
A Charge ◽  
Charge Transfer Coefficient ◽  
Short Time ◽  
Pbo2 Electrodes

The results of short time galvanostatic polarization experiments are described in which the maximum potential excursion is limited to ± 10 mV about the equilibrium potential.Exchange currents have been evaluated both geometrically and iteratively. The charge transfer reaction [Formula: see text]is slow. The dependence of the exchange current on the concentration of Pb(II) is consistent with a charge transfer coefficient of 0.2 in agreement with the arithmetical analysis of current–potential data.There is evidence for an adsorbed layer of hydrogen ion at the electrode.

Direct observation of breaking of the intramolecular H-bond, and slowing down of the proton motion and tuning its mechanism in an HBO derivative

2015 ◽  
Vol 17 (22) ◽  
pp. 14569-14581 ◽  
Author(s):  
Noemí Alarcos ◽  
Mario Gutiérrez ◽  
Marta Liras ◽  
Félix Sánchez ◽  
Miquel Moreno ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Steady State ◽  
Direct Observation ◽  
Emission Spectroscopy ◽  
Transfer Reaction ◽  
Dynamical Behavior ◽  
Charge Transfer Reaction ◽  
Slowing Down ◽  
A Charge

Exploring the mechanism of proton motion coupled to a charge-transfer reaction in a new HBO derivative in solution using steady-state and ultrafast emission spectroscopy shows an abnormal spectroscopic and dynamical behavior.

Reversal and Cyclic Chronopotentiometry with Exponential Current-Time Functions at Spherical Electrodes. Reversibility Effects and Experimental Verification

2004 ◽  
Vol 69 (11) ◽  
pp. 1997-2020 ◽  
Author(s):  
Ángela Molina ◽  
Joaquín González ◽  
Isabel Morales
Keyword(s):  
Charge Transfer ◽  
Aqueous Solutions ◽  
Kinetic Parameters ◽  
Analytical Solutions ◽  
Experimental Verification ◽  
Transfer Reaction ◽  
Superposition Principle ◽  
Charge Transfer Reaction ◽  
Current Time ◽  
Thermodynamic And Kinetic Parameters

General analytical solutions for the potential-time curves corresponding to a slow charge transfer reaction in reversal and cyclic chronopotentiometry with exponential current-time functions, I(t) = I0ewt, have been deduced. For obtaining these equations, the superposition principle can be applied. Our results are valid for planar and spherical electrodes of any size. We have evaluated the effects of electrode sphericity and of the reversibility of the process on the potential-time curves. The analysis of the successive potential-time responses allows to obtain accurate values of the thermodynamic and kinetic parameters of the process under study as well as to detect any possible kinetic complication. The validity of the theoretical solutions has been experimentally tested with the iron(III) trioxalate complex in aqueous solutions.

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