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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5741

Title: A facile approach to the synthesis of hydrophobic iron tetrasulfophthalocyanine (FeTSPc) nano-aggregates on multi-walled carbon nanotubes: A potential electrocatalyst for the detection of dopamine
Authors: Fashedemi, OO
Ozoemena, KI
Keywords: Hydrophobic iron (II)
Tetrasulfophthalocyanine
Multi-walled carbon nanotubes
MWCNTs
Electrocatalysis
Dopamine
Ascorbic acid
Issue Date: Jul-2011
Publisher: Elsevier
Citation: Fashedemi, OO and Ozoemena, KI. 2011. A facile approach to the synthesis of hydrophobic iron tetrasulfophthalocyanine (FeTSPc) nano-aggregates on multi-walled carbon nanotubes: A potential electrocatalyst for the detection of dopamine. Sensors and Actuators B: Chemical, vol. 160(1), pp 7-14
Series/Report no.: Workflow;8799
Abstract: A facile method has been utilized to synthesize ahydrophobic form of nano-scaled iron (II) tetrasulfophthalocyanine (nanoFeTSPc), integrated with functionalized multi-walled carbon nanotubes (fMWCNT-nanoFeTSPc). The nanocomposite was characterized by UV–visible spectra, EDX, FESEM, and TEM. The electrocatalytic properties of the film on a glassy carbon electrode were investigated using cyclic voltammetry, electrochemical impedance spectroscopy, chronoamperometry and square wave voltammetry. The fMWCNT-nanoFeTSPc modified electrode demonstrated higher catalytic performance in terms of electron transport and current response compared to the other electrodes studied towards dopamine (DA) detection giving a sensitivity of 0.314 µA µM-1 and a limit of detection of 9.86 × 10-8 mol L-1. A selective detection was realized in elimination of ascorbic acid response on the film of fMWCNT-nanoFeTSPc. The detection limit in the presence of a high concentration of ascorbic acid was 3.5 × 10-7 mol L-1.
Description: Copyright: 2011 Elsevier. This is the post-print version of the work. The definitive version is published in Sensors and Actuators B: Chemical, vol. 160(1), pp 7-14
URI: http://www.sciencedirect.com/science/article/pii/S0925400511006307
http://hdl.handle.net/10204/5741
ISSN: 0925-4005
Appears in Collections:General science, engineering & technology

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