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Issue 30, 2020
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Fabrication of a hydrazine chemical sensor based on facile synthesis of doped NZO nanostructure materials

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Abstract

In this approach, nickel-doped zinc oxide (NZO) nanostructure materials were synthesized by the solution method in the basic phase. As-grown NZO was characterized in detail by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray spectroscopy (EDS), X-ray electron microscopy (XPS), X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV/vis), Brunauer–Emmett–Teller (BET), electrochemical impedance spectroscopy (EIS), and Fourier transform infrared spectroscopy (FTIR). A glassy carbon electrode (GCE) was modified by NZO as NZO/Nafion/GCE by the drop-coating method. The electrocatalytic activities were also studied by impedance spectroscopy (EIS) as well as cyclic voltammetry (CV) with NZO/Nafion/GCE in ferrocyanide couples. Then, the modified electrode was employed for the determination of hydrazine (HZ) by a simple and reliable electrochemical approach. Carcinogenic HZ was nominated as a target pollutant in the selectivity investigation. In this investigation for measuring HZ in the concentration range 0.20 nM to 0.02 M, the calibration plot was found to be linear (r2 = 0.9996). The sensitivity and limit of detection (LOD) values were obtained as 3.76 μA μM−1 cm−2 and 1.7 ± 0.1 pM (S/N = 3), respectively.

Graphical abstract: Fabrication of a hydrazine chemical sensor based on facile synthesis of doped NZO nanostructure materials

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Article information


Submitted
29 May 2020
Accepted
29 Jun 2020
First published
29 Jun 2020

New J. Chem., 2020,44, 13018-13029
Article type
Paper

Fabrication of a hydrazine chemical sensor based on facile synthesis of doped NZO nanostructure materials

M. M. Rahman, J. Ahmed, A. M. Asiri and K. A. Alamry, New J. Chem., 2020, 44, 13018
DOI: 10.1039/D0NJ02719G

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