scholarly journals Erratum: Dynamics of reversible electron transfer reactions [J. Chem. Phys. 95, 3325 (1991)]

1992 ◽  
Vol 97 (11) ◽  
pp. 8819-8819
Author(s):  
Jianjun Zhu ◽  
Jayendran C. Rasaiah
Keyword(s):  
Electron Transfer ◽  
Chem Phys ◽  
Transfer Reactions ◽  
Electron Transfer Reactions ◽  
Reversible Electron Transfer

Reversible electron-transfer reactions within a nanoscale metal oxide cage mediated by metallic substrates

2008 ◽  
Vol 3 (4) ◽  
pp. 229-233 ◽  
Author(s):  
Christopher Fleming ◽  
De-Liang Long ◽  
Nicola McMillan ◽  
Jacqueline Johnston ◽  
Nicolas Bovet ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Metal Oxide ◽  
Transfer Reactions ◽  
Electron Transfer Reactions ◽  
Metallic Substrates ◽  
Reversible Electron Transfer

scholarly journals Advances in Derivative Voltammetry - A Search for Diagnostic Criteria of Several Electrochemical Reaction Mechanisms

2021 ◽  
Author(s):  
Myung-Hoon Kim
Keyword(s):  
Electron Transfer ◽  
Kinetic Parameters ◽  
Diagnostic Criteria ◽  
Transfer Process ◽  
Reaction Mechanisms ◽  
Transfer Reactions ◽  
Cathodic Peak ◽  
Electron Transfer Reactions ◽  
Reversible Electron Transfer ◽  
Second Derivatives

New methods for analysis of current-potential curves in terms of their derivatives are presented for studying various types of electrode processes – such as simple electron transfer reactions (reversible, quasi-reversible, and irreversible electron transfer) as well as chemically coupled electron transfer reactions along with a diagnostic scheme for differentiating these various types of electrochemical reaction mechanisms. Expressions for first- and higher order derivatives are derived from theoretical analytical solutions for currents for the different types of electrode mechanisms. The derivative curves are analyzed in terms of various parameters which characterize peak shape or peak symmetry with an emphasis on the second derivatives with well-defined anodic and cathodic peaks. Second derivatives can yield, in a simpler manner, the symmetry ratios; i.e., a ratio of anodic to cathodic peak-currents (ipa/ipc), and a ratio of anodic to cathodic peak-widths (Wpa/wpc) and a ratio of anodic to cathodic peak potential differences (ΔEpa/ΔEpc) or a peak separation (Epa-Epc) are evaluated, and these ratio can be related to kinetic parameters associated with a particular types of electrode mechanisms. Peaks are found to be symmetrical for a simple reversible electron transfer process (Er). However, peaks become asymmetrical when the electron transfer become slower (namely, irreversible, Eirr) or e− transfer reaction is coupled with homogeneous chemical reactions such as a prior reaction (CEr) or a follower-up reaction (ECr). From measured values of such symmetry ratios above, one can gain insight to the nature of the electrochemical systems enabling us to determine various kinetic parameters associated with a system. A diagnostic criteria for assigning an electrode mechanism is devised based on the values of asymmetry parameters measured, which are unity for a simple reversible electron transfer process.

scholarly journals Correction: Significance of hydrogen bonding networks in the proton-coupled electron transfer reactions of photosystem II from a quantum-mechanics perspective

2019 ◽  
Vol 21 (39) ◽  
pp. 22160-22160
Author(s):  
Jun Chai ◽  
Zhaoyang Zheng ◽  
Hui Pan ◽  
Shengbai Zhang ◽  
K. V. Lakshmi ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Hydrogen Bonding ◽  
Quantum Mechanics ◽  
Photosystem Ii ◽  
Chem Phys ◽  
Transfer Reactions ◽  
Electron Transfer Reactions ◽  
Proton Coupled Electron Transfer ◽  
Hydrogen Bonding Networks ◽  
Phys Chem Chem Phys

Correction for ‘Significance of hydrogen bonding networks in the proton-coupled electron transfer reactions of photosystem II from a quantum-mechanics perspective’ by Jun Chai et al., Phys. Chem. Chem. Phys., 2019, 21, 8721–8728.

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