A study of the electrochemical oxidation of hydrogen peroxide on a platinum rotating disk electrode in the presence of calcium ions using Michaelis–Menten kinetics and binding isotherm analysis

2008 ◽  
Vol 53 (12) ◽  
pp. 4302-4308 ◽  
Author(s):  
Emad A. Khudaish ◽  
Wafaa R. Al-Farsi
1993 ◽  
Vol 71 (5) ◽  
pp. 674-677 ◽  
Author(s):  
Alexei N. Pankratov ◽  
Inna M. Uchaeva ◽  
Alexander N. Stepanov

The oxidation of phenothiazine in dilute solutions of sulphuric acid leads to the corresponding cation radical. Using a potentiometric technique, a pKa value of 5.72 ± 0.05 was determined for phenothiazine. The kinetics has been studied and participation of both protonated and unprotonated oxidant in the oxidation reaction has been confirmed. Using a voltammetric technique with a rotating disk electrode, the anodic oxidation of phenothiazine was shown to be a one-electron diffusion-controlled process. A quantum chemical explanation was found for the direction of phenothiazine protonation and the absence of a dimerization stage of oxidation.


2007 ◽  
Vol 52 (25) ◽  
pp. 7262-7269 ◽  
Author(s):  
Elena Lobyntseva ◽  
Tanja Kallio ◽  
Nadezda Alexeyeva ◽  
Kaido Tammeveski ◽  
Kyösti Kontturi

Carbon ◽  
2014 ◽  
Vol 70 ◽  
pp. 287-294 ◽  
Author(s):  
Montree Sawangphruk ◽  
Yanisa Sanguansak ◽  
Atiweena Krittayavathananon ◽  
Santamon Luanwuthi ◽  
Pattarachai Srimuk ◽  
...  

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