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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/4939

Title: Voltammetric and impedimetric properties of nano-scaled -Fe2O3 catalysts supported on multi-walled carbon nanotubes: catalytic detection of dopamine
Authors: Adekunle, AS
Ozoemena, KI
Keywords: MWCNTs
Iron oxide nanoparticles
Voltammetry
Electrochemical impedance spectroscopy
Dopamine detection
Electrochemical science
Electrochemicals
Issue Date: Dec-2010
Publisher: Electrochemical Science Group
Citation: Adekunle, AS and Ozoemena, KI. 2010. Voltammetric and impedimetric properties of nano-scaled -Fe2O3 catalysts supported on multi-walled carbon nanotubes: catalytic detection of dopamine. International Journal of Electrochemical Science, Vol. 5, pp 1726-1742
Series/Report no.: Workflow request;6134
Abstract: The electron transfer and electrocatalytic proiperties of iron oxide nanoparticle (g-Fe2O3) catalysts supported on MWCNTs are described. The MWCNT-Fe2O3 and its electrodes were successfully characterised with FESEM, HRTEM, XRD, EDX, cyclic voltammetry and electrochemical impedance spectroscopy. The MWCNT-Fe2O3 based electrodes demonstrated fastest electron transport and current response towards DA compared to other electrodes studied, giving a catalytic rate constant of 16.4 x 105 cm3mol-1s-1, sensitivity of 0.026 AM-1 and limit of detection of 3.3 x 10-7 M. The electrode may be potentially useful for the detection of DA in real drug sample analysis.
Description: Copyright: 2010 Electrochemical Science Group
URI: http://www.electrochemsci.org/papers/vol5/5121726.pdf
http://hdl.handle.net/10204/4939
ISSN: 1452-3981
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