ELECTROXIDATION OF PHENOL USING CARBON PASTE MODIFIED ELECTRODES: CHELATING EFFECT OF MORINGA OLEIFERA Page No: 4299-4304

By: Aziz Zaroual, A Bellaouchou, Hambate Gomdje Valery, Salah El Qouatli, Rachida Najih and Abdelilah Chtaini

Keywords: Moringa oleifera , cyclic voltammetry, square wave, clay, phenol

Abstract: This work report a Cyclic Voltammetry (CV) and square wave (SQW) methods for the determination of chelating phenol by Moringa oleifera based on carbon paste electrode (CPE) modified with clay. The results showed that the CPE-clay has excellent electrocatalytic activity with Moringa oleifera acting as a chelating agent for phenol. The oxidation peak of phenol was observed around 1.00 V (vs.SCE). After Moringa treatment, the oxidation current density decreases and this is due to a sharp drop in phenol concentrations, suggesting that Moringa oleifera has a high phenol chelating capacity. This electrochemical sensor showed an excellent performance for detecting chelate phenol. The sensor has been successfully applied for the determination of phenol in a real chelation.



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