UPM Institutional Repository

Electrochemical reduction of potassium ferricyanide mediated by magnesium diboride modified carbon electrode.


Citation

Tan, Wee Tee and Yusri, Farhan and Zainal, Zulkarnain (2009) Electrochemical reduction of potassium ferricyanide mediated by magnesium diboride modified carbon electrode. Sensors & Transducers Journal, 104 (5). pp. 119-127. ISSN 2306-8515; ESSN: 1726- 5479

Abstract

Use of a glassy carbon (GC) modified by adhered microparticles of MgB2 mediates the reduction process of Fe(III)(CN)63- during cyclic voltammetry. Peak potential was observed to shift slightly to less negative value by about 50 mV and current is significantly enhanced by about two folds. The sensitivity under conditions of cyclic voltammetry is significantly dependent on pH, electrolyte and scan rate. The result of scanning electron micrograph of MgB2 obtained before and after electrolysis show the size increased slightly to the size ranging from 2 - 5.5 µm attributing to the hydration effect and/or incorporation of some ionic species into the crystal lattices of MgB2. Interestingly, redox reaction of Fe(III) solution using modified GC electrode remain constant even after 15cycling. It is therefore evident that the MgB2 modified GC electrode posseses some degree of stability. Potential use of MgB2 as a useful electrode material is therefore clearly evident.


Download File

[img]
Preview
PDF (Abstract)
Electrochemical reduction of potassium ferricyanide mediated by magnesium diboride modified carbon electrode.pdf

Download (83kB) | Preview

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: International Frequency Sensor Association Publishing
Keywords: Solid state voltametry of microparticles; MgB2 modified GC electrode; Fe(III)/(II) redox couple; Electrocatalysis.
Depositing User: Najwani Amir Sariffudin
Date Deposited: 02 May 2014 02:35
Last Modified: 19 Jan 2016 04:09
URI: http://psasir.upm.edu.my/id/eprint/14467
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item