Development of a voltammetric sensor for hydrazine determination using an electrode modified with nanocomposite of a two-dimensional Co-organic framework/Pd nanoparticles
Subject Areas : Applications of Nanostructureszahra dourandish 1 , ایران شیخ شعاعی 2 *
1 - Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Iran
2 - Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Iran
Keywords: Hydrazine, Modified electrode, Co-metal organic framework/Pd nanoparticle nanocomposite, Voltammetry.,
Abstract :
This work successfully synthesized a two-dimensional Co-metal organic framework/palladium nanoparticles nanocomposite. The synthesized nanocomposite was investigated and confirmed by various methods such as field emission scanning electron microscope(FE-SEM), transmission electron microscope(TEM) analysis, X-ray energy dispersive spectroscopy(EDS), and X-ray diffraction pattern(XRD). Then, an electrochemical sensor based on a glassy carbon electrode modified with a two-dimensional Co-metal organic framework/palladium nanoparticles nanocomposite was designed and fabricated to measure hydrazine. The large surface area, the electron transfers sites of the Co-metal organic framework, and the conductivity of Pd nanoparticles provide a sensitive electrochemical sensor for the analysis of hydrazine. Cyclic voltammetry, differential pulse voltammetry, and chronoamperometry techniques were applied to study the electrochemical behavior of hydrazine at the fabricated electrode. Under experimental conditions, the designed sensor displayed the linear concentration range from 0.04 to 560.0 µM with a limit of detection of 0.01 µM for the detection of hydrazine. The applicability of the proposed sensor for hydrazine detection in tap water and river water samples was evaluated with satisfactory results.
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