scholarly journals Electrochemical Oxidation of l-selenomethionine and Se-methylseleno-l-cysteine at a Thiol-Compound-Modified Gold Electrode: Its Application in a Flow-Through Voltammetric Sensor

Sensors ◽  
2017 ◽  
Vol 17 (2) ◽  
pp. 383 ◽  
Author(s):  
Lai-Hao Wang ◽  
Yu-Han Zhang
Keyword(s):  
Electrochemical Oxidation ◽  
Gold Electrode ◽  
Voltammetric Sensor ◽  
Thiol Compound ◽  
Flow Through

Electrochemical oxidation of ammonia borane on gold electrode

2009 ◽  
Vol 34 (1) ◽  
pp. 174-179 ◽  
Author(s):  
X ZHANG ◽  
S HAN ◽  
J YAN ◽  
H SHIOYAMA ◽  
N KURIYAMA ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Gold Electrode ◽  
Ammonia Borane ◽  
Oxidation Of Ammonia

Electrochemical Reaction Mechanism of Tiron in Acidic Aqueous Solution

2011 ◽  
Vol 396-398 ◽  
pp. 1730-1735 ◽  
Author(s):  
Yan Xu ◽  
Yue Hua Wen ◽  
Jie Cheng ◽  
Gao Ping Cao ◽  
Yu Sheng Yang
Keyword(s):  
Aqueous Solution ◽  
Cyclic Voltammetry ◽  
Aqueous Solutions ◽  
Electrochemical Oxidation ◽  
Electrochemical Reaction ◽  
Mass Spectrometric ◽  
Acidic Aqueous Solution ◽  
Ece Mechanism ◽  
Flow Through ◽  
Electro Oxidation

Electrochemical oxidation of tiron in the presence of H2O as a nucleophile in strongly acidic aqueous solutions was studied by cyclic voltammetry, controlled-voltage coulometry and spectrometric investigations. The mechanism of electrochemical reaction is confirmed by spectrophotometric tracing in various times of controlled-voltage coulometry. The voltammetric and spectrophotometric foundations indicate that a 1,4-Michael addition of H2O from its hydroxy moiety to the position 4 of electrochemically derived o-quinone is occurred. The electrochemical oxidation and reduction of tiron has been successfully accomplished by controlled-voltage coulometry in a redox flow-through type cell and the final electro-reduced product was characterized by spectrophotometric, 1H NMR and mass spectrometric methods. It is demonstrated that the electro-oxidation of tiron follows an ECE mechanism in acidic aqueous solutions, leading to formation of a new compound of para- benzoquinone derivative.

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