Abstract
A sandwich-structured C3F7-azo+-TaWO6 nanocomposite used as an electrochemical sensor for simultaneous determination of dopamine (DA) and ascorbic acid (AA) was synthesized by guest-guest exchange method. n-PrNH3
+-TaWO6 precursor was ion-exchanged with cationic polyfluorinated azo dye, trans-[2-(2,2,3,3,4,4,4-heptafluorobutylamino)ethyl]-{2-[4-(4-hexyphenylazo)-phenoxy]ethyl} dimethylammonium bromide (abbreviated as C3F7-azo+Br−). The structure and morphology were characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), energy dispersive spectrometer analysis (EDS) and Fourier transform infrared spectrometer (FTIR). Differential pulse voltammetry (DPV) and cyclic voltammetry (CV) were used to test the electrochemical properties of C3F7-azo+-TaWO6 nanocomposite. The experimental results show that C3F7-azo+-TaWO6/GCE can detect AA and DA at the same time, with the potential difference reaching 356 mV. Moreover, electrochemical sensing toward DA and AA on C3F7-azo+-TaWO6/ GCE exhibits low detection limits of 0.81 μM and 1.6 μM, respectively, each in a linear range of 0.05 to 0.31 mM.
Funder
Postgraduate Research & Practice Innovation Program of Jiangsu Province
Jiangsu Provincial Key Laboratory of Advanced material function control technology Research Fund
2019 Petrel Project of Lianyungang
Key Discipline Construction Program of Jiangsu Province
First-class Undergraduate Majors Construction Program of Jiangsu Province
Priority Academic Program Development of Jiangsu Higher Education Institutions
Publisher
The Electrochemical Society
Subject
Materials Chemistry,Electrochemistry,Surfaces, Coatings and Films,Condensed Matter Physics,Renewable Energy, Sustainability and the Environment,Electronic, Optical and Magnetic Materials
Cited by
8 articles.
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