Voltammetric and impedimetric properties of nano-scaled y--Fe2O3 catalysts supported on multi-walled carbon nanotubes : catalytic detection of dopamine

Adekunle, Abolanle Saheed; Ozoemena, Kenneth I.

dc.contributor.author	Adekunle, Abolanle Saheed
dc.contributor.author	Ozoemena, Kenneth I.
dc.date.accessioned	2011-03-08T07:04:35Z
dc.date.available	2011-03-08T07:04:35Z
dc.date.issued	2010-12
dc.description.abstract	The electron transfer and electrocatalytic proiperties of iron oxide nanoparticle (-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.	en
dc.identifier.citation	Adekunle, AS & Ozoemena, KI 2010, 'Voltammetric and impedimetric properties of nano-scaled y--Fe2O3 catalysts supported on multi-walled carbon nanotubes : catalytic detection of dopamine', International Journal of Electrochemical Science, vol. 5, no. 12, pp. 1726-1742. [http://www.electrochemsci.org]	en
dc.identifier.issn	1452-3981
dc.identifier.uri	http://hdl.handle.net/2263/15998
dc.language.iso	en	en_US
dc.publisher	Electrochemical Science Group	en_US
dc.rights	© 2010 by ESG	en_US
dc.subject	MWCNTs	en
dc.subject	Iron oxide nanoparticles	en
dc.subject	Electrochemical impedance spectroscopy	en
dc.subject	Dopamine detection	en
dc.subject.lcsh	Voltammetry	en
dc.subject.lcsh	Electrocatalysis	en
dc.title	Voltammetric and impedimetric properties of nano-scaled y--Fe2O3 catalysts supported on multi-walled carbon nanotubes : catalytic detection of dopamine	en
dc.type	Article	en