Anomalously Slow Electron Transfer at Ordered Graphite Electrodes: Influence of Electronic Factors and Reactive Sites

1994 ◽  
Vol 98 (20) ◽  
pp. 5314-5319 ◽  
Author(s):  
K. K. Cline ◽  
Mark T. McDermott ◽  
Richard L. McCreery
Keyword(s):  
Electron Transfer ◽  
Slow Electron ◽  
Graphite Electrodes

Electrochemical behaviour and ESR spectra of nitro substituted mono- and dibenzoylmethylenebenzthiazolines and selenazolines

1979 ◽  
Vol 44 (5) ◽  
pp. 1540-1551 ◽  
Author(s):  
Jaro Komenda ◽  
Jiří Huzlík
Keyword(s):  
Electron Transfer ◽  
Esr Spectroscopy ◽  
Electrochemical Behaviour ◽  
Spectroscopic Studies ◽  
Esr Spectra ◽  
Slow Electron

Compounds of the type of 2-(4'-nitrobenzoyl)methylene-3-ethylbenzothiazoline (I) and 2-bis-(p-nitrobenzoyl)methylene-3-ethylbenzothiazoline (II) were studied polarographically and by ESR spectroscopy to obtain informations about their electrochemical and follow-up reactions and their conformation. Whereas with compounds of the type I the conjugation in their molecules is preserved, with type II the coplanarity of the molecules is disturbed, which is manifested in the values of the splitting constants of the ESR spectra and a slow electron transfer between both nitrophenyl substituents. These conclusions are supported by NMR spectroscopic studies.

A Comparison between Interfacial Electron-Transfer Rate Constants at Metallic and Graphite Electrodes

2006 ◽  
Vol 110 (39) ◽  
pp. 19433-19442 ◽  
Author(s):  
William J. Royea ◽  
Thomas W. Hamann ◽  
Bruce S. Brunschwig ◽  
Nathan S. Lewis
Keyword(s):  
Electron Transfer ◽  
Rate Constants ◽  
Transfer Rate ◽  
Interfacial Electron Transfer ◽  
Electron Transfer Rate ◽  
Graphite Electrodes

Direct electron transfer in immobilized flavoenzyme chemically modified graphite electrodes

1982 ◽  
Vol 141 ◽  
pp. 23-32 ◽  
Author(s):  
Robert M. Ianniello ◽  
Thomas J. Lindsay ◽  
Alexander M. Yacynych
Keyword(s):  
Electron Transfer ◽  
Direct Electron Transfer ◽  
Graphite Electrodes ◽  
Chemically Modified

Electron transport in clay-modified electrodes: study of electron transfer between electrochemically oxidized tris (2,2′-bipyridyl) iron cations and clay structural iron(II) sites

1992 ◽  
Vol 70 (6) ◽  
pp. 1833-1837 ◽  
Author(s):  
Yan Xiang ◽  
Gilles Villemure
Keyword(s):  
Electron Transfer ◽  
Modified Electrodes ◽  
Quantitative Relation ◽  
Cyclic Voltammograms ◽  
Slow Electron ◽  
Cathodic Current ◽  
Peak Current ◽  
Scan Speed ◽  
Anodic Peak Current ◽  
Structural Iron

The cyclic voltammograms of tris (2,2′-bipyridyl) iron(II) ([Fe(bpy)3]2+) adsorbed in clay-modified electrodes made from a range of different smectites were recorded. In all cases, at low scan speed (1 mV/s), the initial anodic peak current was much larger than the initial cathodic peak current. Partial reduction of the clay structural iron further increased the initial anodic to cathodic current ratio, suggesting that the discrepancy between the charge transferred in the anodic and cathodic scans was due to a slow electron transfer between the clay structural Fe(II) and the oxidized bipyridyl cations. However, no clear quantitative relation was found between the measured FeO contents of the different clays and the observed excess anodic currents. In fact, of all the clays tested only one, montmorillonite SWy-1, contained enough Fe(II) for it to account for all of the excess anodic charge transferred in the initial scan.

Direct Electron Transfer Between Graphite Electrodes and Ligninolytic Peroxidases from Phanerochaete chrysosporium

2002 ◽  
Vol 14 (19-20) ◽  
pp. 1411-1418 ◽  
Author(s):  
Elena E. Ferapontova ◽  
N. Scott Reading ◽  
Steven D. Aust ◽  
Tautgirdas Ruzgas ◽  
Lo Gorton
Keyword(s):  
Electron Transfer ◽  
Phanerochaete Chrysosporium ◽  
Direct Electron Transfer ◽  
Graphite Electrodes

scholarly journals Exploring the electrochemical performance of graphite and graphene paste electrodes composed of varying lateral flake sizes

2018 ◽  
Vol 20 (30) ◽  
pp. 20010-20022 ◽  
Author(s):  
Anthony J. Slate ◽  
Dale A. C. Brownson ◽  
Ahmed S. Abo Dena ◽  
Graham C. Smith ◽  
Kathryn A. Whitehead ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electrochemical Performance ◽  
Direct Relationship ◽  
Graphite Electrodes ◽  
Improved Performance ◽  
Electron Transfer Properties ◽  
Transfer Properties

A direct relationship is shown with respect to the lateral flake size comprising graphene and graphite electrodes and their corresponding electron transfer properties, with smaller flake sizes (increased edge plane contributions) resulting in improved performance.

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