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http://dx.doi.org/10.5229/JECST.2016.7.1.82

Electrochemical Oxidation of Amoxicillin in Its Commercial Formulation on Thermally Prepared RuO2/Ti  

Auguste, Appia Foffie Thiery (Laboratoire de Chimie Physique, UFR SSMT, Universite Felix Houphouet-Boigny de Cocody)
Quand-Meme, Gnamba Corneil (Laboratoire de Chimie Physique, UFR SSMT, Universite Felix Houphouet-Boigny de Cocody)
Ollo, Kambire (Laboratoire de Chimie Physique, UFR SSMT, Universite Felix Houphouet-Boigny de Cocody)
Mohamed, Berte (Laboratoire de Chimie Physique, UFR SSMT, Universite Felix Houphouet-Boigny de Cocody)
Sahi placide, Sadia (Laboratoire de Chimie Physique, UFR SSMT, Universite Felix Houphouet-Boigny de Cocody)
Ibrahima, Sanogo (Centre Hospitalier Universitaire (CHU Treichville) de Treichville)
Lassine, Ouattara (Laboratoire de Chimie Physique, UFR SSMT, Universite Felix Houphouet-Boigny de Cocody)
Publication Information
Journal of Electrochemical Science and Technology / v.7, no.1, 2016 , pp. 82-89 More about this Journal
Abstract
In this work, a ruthenium dioxide electrode has been prepared by thermal decomposition at 400 ℃ then used for the oxidation of commercial amoxicillin. The physical characterization showed that RuO2 electrode presents a mud cracked structure. Its electrochemical characterization has revealed an increase of the voltammetric charge in acid electrolyte compared to neutral electrolyte indicating the importance of protons in its surface redox processes. The voltammetric study of the oxidation of amoxicillin has been investigated. It has been obtained that the oxidation of amoxicillin is controlled by both adsorption and diffusion processes. Moreover, the oxidation of amoxicillin occurs via direct and indirect processes in free or electrolyte containing chlorides. Through preparative electrolysis, enhancement of amoxicillin oxidation was observed in the presence of chloride where the amoxicillin degradation yield reached more than 50 % compared to less than 5% in the absence of chlorides. Spectrophotometric investigations have revealed the degradation of intermediates absorbing at 350 nm.
Keywords
amoxicillin; oxidation; perchlorate; electrolysis; current density; ruthenium dioxide;
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