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.

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

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.

The photolysis of hexaaquoiron(III) perchlorate in the presence of ethylene glycol

1977 ◽  
Vol 55 (4) ◽  
pp. 625-629 ◽  
Author(s):  
John H. Carey ◽  
Ernest G. Cosgrove ◽  
Barry G. Oliver
Keyword(s):  
Charge Transfer ◽  
Ethylene Glycol ◽  
Transfer Reaction ◽  
Outer Sphere ◽  
Reaction Scheme ◽  
Major Product ◽  
Quantum Yields ◽  
Charge Transfer Reaction ◽  
Charge Transfer Transition ◽  
A Charge

Two types of reactions occur when hexaaquoiron(III) ion is irradiated at 254 nm in the presence of alcohols. Firstly, a charge transfer transition from a water centred orbital to an iron centred orbital produces OH•radicals which go on to abstract hydrogen from the alcohols. Secondly, |the reaction with the charge transfer excited states of iron(III) species can lead to outer sphere oxidation of the alcohols. In this paper, these reactions have been studied in detail for the diol ethylene glycol in aqueous solutions. It has been found that the quantum yield of acetaldehyde, the major product of hydroxyl radical reactions with ethylene glycol, is 0.09 and the yield of formaldehyde, the major product of the direct charge transfer reaction, is 0.05 in 1 M ethylene glycol. The quantum yields for these major products, as well as minor products, such as glycolaldehyde and succinaldehyde, have been determined at several concentrations of ethylene glycol and iron. A detailed reaction scheme for the photolysis has been developed.

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