Journal
ANALYTICA CHIMICA ACTA
Volume 845, Issue -, Pages 30-37Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2014.06.027
Keywords
Polycyclic aromatic amines; Graphene nanoribbons; Carbon nanotubes; Electrochemical sensor; Environmental analysis
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Funding
- National Natural Science Foundation of China [21405062, 21375050]
- China Postdoctoral Science Foundation [2014M551507]
- Scientific Research Foundation for the Talents in Jiangsu University [13JDG091]
- Jiangsu Planned Projects for Postdoctoral Research Funds
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Being awfully harmful to the environment and human health, the qualitative and quantitative determinations of polycyclic aromatic amines (PAAs) are of great significance. In this paper, a novel core-shell heterostructure of multiwalled carbon nanotubes (MWCNTs) as the core and graphene oxide nanoribbons (GONRs) as the shell (MWCNTs@GONRs) was produced from longitudinal partially unzipping of MWCNTs side walls using a simple wet chemical strategy and applied for electrochemical determination of three kinds of PAAs (1-aminopyrene (1-AP), 1-aminonaphthalene and 3,3'-diaminobiphenyl). Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, thermogravimetric analysis and electrochemical methods were used to characterize the as-prepared MWCNTs@GONRs. Due to the synergistic effects from MWCNTs and GONRs, the oxidation currents of PAAs at the MWCNTs@GONRs modified glassy carbon ( GC) electrode are much higher than that at the MWCNTs/GC, graphene/GC and bare GC electrodes. 1-AP was used as the representative analyte to demonstrate the sensing performance of the MWCNTs@GONRs/GC electrode, and the proposed modified electrode has a linear response range of 8.0-500.0 nM with a detection limit of 1.5 nM towards 1-AP. (C) 2014 Elsevier B.V. All rights reserved.
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