Comparative surface electrochemistry of Co and Co3O4 nanoparticles : nitrite as an analytical probe
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Date
Authors
Adekunle, Abolanle Saheed
Ozoemena, Kenneth I.
Journal Title
Journal ISSN
Volume Title
Publisher
Electrochemical Science Group
Abstract
This study described the decoration of edge plane pyrolytic graphite electrode (EPPGE) with synthesised cobalt and cobalt oxide nanoparticles. The modified electrode was characterised by techniques such as TEM, FESEM, XRD, EDS, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The EPPGE-Co demonstrated enhanced electron transport and catalytic efficiency towards nitrite oxidation at pH 7.4 compared with the other electrodes studied. The catalytic rate constant (K) obtained at the EPPGE-Co for nitrite at pH 7.4 is 2.32 x 106 cm3mol-1s-1 while the limits of detection (LoD = 3.3 δ/m) is 7.3 x 10-7 M.
Description
Keywords
Cobalt and cobalt oxide nanoparticles, Nitrite oxidation
Sustainable Development Goals
Citation
Adekunle, AS & Ozoemena, KI 2010, 'Comparative surface electrochemistry of Co and Co3O4 nanoparticles : nitrite as an analytical probe', International Journal of Electrochemical Science, vol. 5, no. 12, pp. 1972-1983. [http://www.electrochemsci.org]