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Issue 20, 2013
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A molecularly-imprinted electrochemical sensor based on a graphene–Prussian blue composite-modified glassy carbon electrode for the detection of butylated hydroxyanisole in foodstuffs

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Abstract

In this study, we developed a novel molecularly-imprinted electrochemical sensor based on a glassy carbon electrode (GCE) decorated by graphene–Prussian blue (GR–PB) composites for the selective and sensitive determination of butylated hydroxyanisole (BHA). The molecularly-imprinted polymers (MIPs) were synthesized by BHA and pyrrole as the template molecule and functional monomer, respectively. Also, the MIPs were assembled on the surface of the GR–PB/GCE by electropolymerization. The sensor was characterized by cyclic voltammetry (CV), scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and chronoamperometry. It was confirmed that the synergistic effects of GR and PB could improve the electrochemical response and the sensitivity of the sensor. The linear range of the sensor was from 9 × 10−8 mol L−1 to 7 × 10−5 mol L−1, with a limit of detection (LOD) of 7.63 × 10−8 mol L−1 (S/N = 3). The proposed sensor displayed high selectivity, excellent stability and good reproducibility for the determination of BHA. It was successfully applied to the determination of BHA in real samples.

Graphical abstract: A molecularly-imprinted electrochemical sensor based on a graphene–Prussian blue composite-modified glassy carbon electrode for the detection of butylated hydroxyanisole in foodstuffs

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Publication details

The article was received on 17 Jun 2013, accepted on 22 Jul 2013 and first published on 24 Jul 2013


Article type: Paper
DOI: 10.1039/C3AN01190A
Citation: Analyst, 2013,138, 5949-5955
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    A molecularly-imprinted electrochemical sensor based on a graphene–Prussian blue composite-modified glassy carbon electrode for the detection of butylated hydroxyanisole in foodstuffs

    M. Cui, S. Liu, W. Lian, J. Li, W. Xu and J. Huang, Analyst, 2013, 138, 5949
    DOI: 10.1039/C3AN01190A

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