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Reference type: Journal
Authors: Xu BJ, Zhang BH, Yang LT, Zhao FQ, Zeng BZ
Article Title: Electrochemical determination of luteolin using molecularly imprinted poly-carbazole on MoS2/graphene-carbon nanotubes nanocomposite modified electrode.
Publication date: 2017
Journal: Electrochimica Acta
Volume: 258
Page numbers: 1413-1420.
DOI: 10.1016/j.electacta.2017.12.004
Alternative URL: https://www.sciencedirect.com/science/article/pii/S0013468617325641

Abstract: MoS2/graphene-carbon nanotubes (MoS2/GN-CNTs) nanocomposite was prepared by hydrothermal method. The nanocomposite combined the high catalysis of MoS2 with the superior electronic conductivity of GN-CNTs, and exhibited high electrochemical sensitivity towards luteolin. A molecularly imprinted polymer (MIP) film deposited by electropolymerization, based on carbazole monomer and luteolin template, was used to improve the selectivity. Thus the resulting electrochemical sensor MIP/MoS2/GN-CNTs/GCE showed high performance. Its linear detection range and limit of detection were 0.040-2.0 μM and 9.0 nM (S/N = 3), respectively, while its sensitivity was 381.3 μA μM-1 cm-2. In addition, 1000-fold K+, Na+, Ca2+, Mg2+, NO3-, Cl-, SO42- and CO32- 500-fold glucose and mannitol, 250-fold cystein, glycine, lysine, citric acid and oxalic acid, and 100-fold urea, ascorbic acid and dopamine did not interfere with the determination of luteolin. Moreover, 5-fold analogs rutin, catechin and naringenin, and 2-fold kaempferide, quercetin and morin also did not influence on its determination. The sensor was applied to the determination of luteolin in carrot and chrysanthemum tea samples and the results were in good agreement with those obtained through HPLC
Template and target information: luteolin
Author keywords: MoS2, Graphene, Carbon nanotube, Luteolin, molecularly imprinted polymer

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