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Issue 13, 2014
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Copper coralloid granule/polyaniline/reduced graphene oxide nanocomposites for nonenzymatic glucose detection

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Abstract

A novel nonenzymatic glucose sensor was prepared based on a Cu coralloid granule/polyaniline (PANI)/reduced graphene oxide (rGO) nanocomposite modified glassy carbon electrode (GCE). The PANI nanowire array/rGO nanocomposite was synthesized by using an in situ chemical oxidative polymerization method, and then was cast onto a GCE surface. Cu coralloid granules were constructed on PANI/rGO/GCE by constant potential deposition. The Cu/PANI/rGO nanocomposite was characterized by scanning electron microscopy, X-ray energy dispersive spectroscopy, X-ray powder diffraction and Fourier transform infrared spectroscopy. The electrochemical and electrocatalytic behaviors of the Cu/PANI/rGO/GCE towards glucose oxidation were evaluated by cyclic voltammograms, electrochemical impedance spectroscopy, chronoamperometry and amperometric method. The amperometric response of Cu/PANI/rGO/GCE showed high catalytic activity towards the oxidation of glucose with a wide linear range of 0.01–9.66 mM, high sensitivity of 603.59 μA cm−2 mM−1 and low detection limit of 1.34 μM (S/N = 3).

Graphical abstract: Copper coralloid granule/polyaniline/reduced graphene oxide nanocomposites for nonenzymatic glucose detection

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Article information


Submitted
20 Feb 2014
Accepted
13 Apr 2014
First published
14 Apr 2014

Anal. Methods, 2014,6, 4643-4651
Article type
Paper

Copper coralloid granule/polyaniline/reduced graphene oxide nanocomposites for nonenzymatic glucose detection

X. Lu, Y. Ye, Y. Xie, Y. Song, S. Chen, P. Li, L. Chen and L. Wang, Anal. Methods, 2014, 6, 4643
DOI: 10.1039/C4AY00421C

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