Electrochemical Oxidation of Paracetamol Mediated by MgB₂ Microparticles Modified Glassy Carbon Electrode

Abstract

A MgB 2 microparticles modified glassy carbon electrode (MgB 2 /GCE) was fabricated by adhering microparticles of MgB 2 onto the electrode surface of GCE. It was used as a working electrode for the detection of paracetamol in 0.1 M KH 2 PO 4 aqueous solution during cyclic voltammetry. Use of the MgB 2 /GCE the oxidation process of paracetamol with a current enhancement significantly by about 2.1 times. The detection limit of this modified electrode was found to be 30 µM. The sensitivity under conditions of cyclic voltammetry is significantly dependent on pH, supporting electrolyte, temperature and scan rate. The current enhancement observed in different electrolytic media varied in the following order: KH 2 PO 4 > KCl > K 2 SO 4 > KBr. Interestingly, the oxidation of paracetamol using modified GC electrode remain constant even after 15 cycling. It is therefore evident that the MgB 2 modified GC electrode possesses some degree of stability. A slope of 0.52 dependent of scan rate on current indicates that the system undergoes diffusion-controlled process.

Synthesis and characterization of new Ti–Bi2O3 anode and its use for reactive dye degradation

“…Bi2O3 micro-particles deposited onto glassy carbon electrode have been successfully used as the electro-catalyst in the electrochemical oxidation of ascorbic acid [19]. It has also been applied as a photocatalyst for the removal of other compounds, such as some organic dyes and pigments, 4-chlorophenol and gaseous NO and HCHO [20][21][22][23][24][25].…”

TiInCrO6-nanomaterial synthesis, characterization and multi applications

“…12 indicates that TiInCrO 6 modified glassy carbon electrode has larger adsorption-desorption and high electrochemical reaction than that of TiO 2 nanomaterial. A few literature information has indicated that glassy carbon electrodes modified with metal ion and carbon materials are created to achieve enhanced in comparison to bare GCE (Subash et al 2013a, b;Zidan et al 2010;Radhi et al 2010;Chandraboss et al 2015). The result thus suggests that the occurrence of could increases current and improves the relation electron transferred by TiInCrO 6 nanomaterial.…”

Classification of Green and Black Teas by PCA and SVM Analysis of Cyclic Voltammetric Signals from Metallic Oxide-Modified Electrode

“…In addition, previous literature has also demonstrated that bismuth oxide-modified electrode has a special sensitivity in detecting paracetamol (Zidan et al 2011), which is a small molecule with a skeleton of phenol. While in this work, as it has been said previously, the main difference of green and black teas is their different concentrations in phenolic compounds.…”

“…Bismuth oxide, which is known as an important transition metal oxide, has been used for a range of applications (Hwang et al 2008;Li and Yan 2009;Zidan et al 2011Zidan et al , 2010 because of its special energy band gap and photoconductivity. In this system, the electrode reaction of Bi 2 O 3 is:…”