scholarly journals A Systematic Approach to the Anodic Oxidation of Aqueous Sulfur Dioxide at Platinum, Gold and Glassy Carbon Electrodes: Investigation of the Electro-Oxidation Mechanism Using Cyclic Voltammetry and EQCM Techniques

2009 ◽  
Keyword(s):  
Cyclic Voltammetry ◽  
Sulfur Dioxide ◽  
Anodic Oxidation ◽  
Glassy Carbon ◽  
Systematic Approach ◽  
Oxidation Mechanism ◽  
Carbon Electrodes ◽  
Glassy Carbon Electrodes ◽  
Electro Oxidation

Adsorption of ochratoxin A (OTA) anodic oxidation product on glassy carbon electrodes in highly acidic reaction media: Its thermodynamic and kinetics characterization

2010 ◽  
Vol 55 (3) ◽  
pp. 771-778 ◽  
Author(s):  
Eduardo Alejandro Ramírez ◽  
María Alicia Zón ◽  
Paola Andrea Jara Ulloa ◽  
Juan Arturo Squella ◽  
Luis Nuñez Vergara ◽  
...  
Keyword(s):  
Ochratoxin A ◽  
Anodic Oxidation ◽  
Glassy Carbon ◽  
Oxidation Product ◽  
Carbon Electrodes ◽  
Glassy Carbon Electrodes ◽  
Reaction Media

scholarly journals Electro-oxidation of chlorophenols at glassy carbon electrodes modified with polyNi(II)complexes

2009 ◽  
Vol 54 (26) ◽  
pp. 6417-6425 ◽  
Author(s):  
Cristhian Berríos ◽  
José F. Marco ◽  
Claudio Gutiérrez ◽  
María Soledad Ureta-Zañartu
Keyword(s):  
Glassy Carbon ◽  
Carbon Electrodes ◽  
Glassy Carbon Electrodes ◽  
Electro Oxidation

Electrochemical investigations on some potential antibacterials, I

1995 ◽  
Vol 73 (2) ◽  
pp. 176-180 ◽  
Author(s):  
Rajeev Jain ◽  
M. Damodharan
Keyword(s):  
Cyclic Voltammetry ◽  
Glassy Carbon ◽  
Electrochemical Behaviour ◽  
Carbon Electrodes ◽  
Electron Wave ◽  
Nmr Studies ◽  
Glassy Carbon Electrodes ◽  
Single Well ◽  
Controlled Potential ◽  
Ph Range

Electrochemical behaviour of the medicinally important 4-(4′-sulphonamoyl)hydrazono-1-phenyl-3-methyl-2-pyrazolin-5-ones has been studied at d.m.e. and glassy carbon electrodes. At d.m.e., all six compounds exhibited a single, well-defined, four-electron wave in the pH range 2.5–12.0. Polarographic four-electron wave was found to be diffusion-controlled and irreversible. Similarly, cyclic voltammetry of these compounds at glassy carbon electrode exhibited a single peak. Peak potential shows shifts towards negative potential with pH, with linear segments up to pH 8.2 and are practically pH independent at higher pH values. An anodic peak at far-off positive potential was observed in the reverse scan, indicating the irreversible nature of the electrode process. Controlled potential electrolysis and coulometric studies gave the value of n as 4.0 ± 0.1 in the pH range 2.5 to 10.0. Out of the two major end products formed, one was identified as sulphanilamide and the other as 1-phenyl-3-methyl-4-amino-2-pyrazolin-5-one on the basis of IR and NMR studies. On the basis of DCP, LSV, CV, CPE, coulometry and spectral analysis, a mechanism has been postulated for the reduction of these compounds at d.m.e. and glassy carbon electrodes. Keywords: polarography, cyclic voltammetry, antibacterials, pyrazolin-5-ones.

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