Investigation of voltammetric behavior of 4-nitroaniline based on electrodeposition of silver particles onto graphite electrode
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Electrochemical modification of carbon-paste electrode (CPEs) by silver particles and its applicability for electroanalytical determination of 4-nitroaniline (4-NA) were reported in this study. Electrochemical surface modification was performed by cyclic voltammetry within the range from 600 to − 400 mV in solution containing 0.5 mmol L−1 AgNO3 dissolved in 0.1 mol L−1 of KNO3 at the scan rate of 10 mV s−1 by applying 1.5 cycles (six segments). Silver particles deposited onto surface of carbon-paste electrode (Ag-CPE) were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The proposed catalyst exhibits remarkably an electro-catalytic performance toward 4-nitroaniline reduction. The catalytic peak current obtained by differential pulse voltammetry (DPV) was linearly dependent on the 4-NA concentration over the range of 8.0 × 10−8 to 1.0 × 10−4 mol L−1 with a detection limit of 4.18 × 10−8 mol L−1. The proposed sensor was successfully applied for 4-nitroaniline determination in drinking water samples.
Keywords4-nitroaniline Silver particles Electrodeposition Carbon-paste electrodes Electrocatalysis
- 3.Smith SR, Riddell-Black D (2007) Sources and impacts of past, current and future contamination of soil, in research project final report for defra project code SP 0547. Imperial College London:1–247Google Scholar
- 15.Yosypchuk O, Karásek J, Vyskočil V, Barek J, Pecková K (2012) The use of silver solid amalgam electrodes for voltammetric and amperometric determination of nitrated polyaromatic compounds used as markers of incomplete combustion. Sci World J 2012:1–12. https://doi.org/10.1100/2012/231986 CrossRefGoogle Scholar
- 30.Hammani H, Boumya W, Laghrib F, Farahi A, Lahrich S, Aboulkas A, El Mhammedi MA (2017) Electro-catalytic effect of Al2O3 supported onto activated carbon in oxidizing phenol at graphite electrode, mater. Today Chem 3:27–36Google Scholar
- 34.A.J. Bard, L.R. Faulkner, Electrochemical methods, fundamentals and applications, Wiley, New York, (2001), 163Google Scholar