Direct Electrodeposition to Fabricate 3D Graphene-Carbon Nanotubes Network Modified Electrode for Sensitive Electrochemical Determination of Maltol

• Published in: Journal of the Electrochemical Society Vol. 164; no. 14; pp. H1033 - H1040
• Main Authors: Wang, Fei, Ding, Kang, Zhang, Can, Jia, Wenke, Lu, Kui, Ye, Yingjie
• Format: Journal Article
• Language: English
• Published: The Electrochemical Society 01.01.2017
• DOI: 10.1149/2.0601714jes
• ISSN: 0013-4651

In this work, pulse potential method (PPM) was presented to fabricate directly three dimensional graphene-carbon nanotubes (3DG-CNTs) network on the surface of glassy carbon electrode (GCE). The morphological and characteristic of 3DG-CNTs network were investigated by means of Raman spectra, scanning electron microscopy (SEM) and electrochemical experiments. The 3DG-CNTs network as a new voltammetric material was applied in developing a high-sensitive electrochemical sensor for determination of maltol. Under the optimum conditions, the electrochemical response showed a linear relationship with maltol concentrations in the range of 5.0 × 10−8 ∼ 4.5 × 10−6 mol L−1 and 1.0 × 10−5 ∼ 2.0 × 10−3 mol L−1, and a low detection limit of 1.0 × 10−8 mol L−1 was achieved for maltol. Moreover, the proposed method exhibited an excellent selectivity, stability, reproducibility and repeatability, which make it very suitable for a potential choice for determination of maltol in food matrices.