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Delloula Lakhdari,Nadjem Lakhdari,Ines Laourari,Abderrahmane Berchi,YoungKwon Park,Yasser Vasseghian,Mohammed Berkani 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.124 No.-
In this study, three types of electrodes based on polyvinyl alcohol (PVA)/ polyaniline (PANI) are synthesizedand their effects on the electro-oxidation of methanol (MeOH) are investigated. Composite electrodesof PVA/PANI-Ni, PVA/PANI-Cu, and PVA/PANI-NiCu are synthesized via the in-situpolymerization of aniline, Cu, Ni, and NiCu (Ni80Cu20 alloy) particles in the presence of PVA. Opticaland chemical compositions and morphological characteristics of composite films are determined usingUV–Vis, FTIR, SEM, and TGA analysis. The electrode degradation efficiency of MeOH following oxidationand the elimination of toxins from the solution by voltammetry and chronopotentiometry is also investigated. The results indicate that PVA/PANI-NiCu performs better than PVA/PANI-Ni electrode. The degradationof MeOH in an alkaline medium is monitored using UV–visible spectroscopy under a currentdensity of 2.18 mAcm2 with a stock solution of 0.1 M MeOH for 120 min. The toxicities of MeOH andthe generated by-products were tested and confirmed through a growth-inhibition test againstStaphylococcus aureus ATCC 6538 using the disk-diffusion method; the obtained results confirmed theeffectiveness of our process.