Synthesis and characterization of Fe3O4/Polyaniline microtube composite as electrochemical sensor for Lead (II) detection

Document Type : Full length research Paper

Author

Department of Chemistry, Faculty of Science University of Farhangian, Tehran, Iran

Abstract

In the present study, Fe3O4/polyaniline micro-tube nanocomposite (Fe3O4/PAn MT-NCs) was synthesized and used as a sensitive material for the detection of lead (II) cation to enhance the performance of glassy carbon electrode (GCE). The results of the scanning electron microscope (SEM) and X-Ray diffraction (XRD) confirmed the morphology of PAn MTs and the presence of Fe3O4 nanoparticles respectively. The electrochemical impedance spectroscopy (EIS) results showed a decrease in the electron transfer resistance in the Fe3O4/PAn MT-NCs/GCE due to the presence of PAn MTs. The increase in the available surface area of the Fe3O4 / PAn MT-NCs/GCE in comparison with bare GCE was confirmed by the increase of the capacitive properties in the EIS results. The improved GCE showed high selectivity, sensitivity 1.452 µA.nM-1.cm-2 to the detection of lead (II) cation, and a limitation of detection (LOD) 0.027 nM.

Keywords

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References

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Journal of Research on Many-body Systems
Volume 12, Issue 1 - Serial Number 32
spring 2022
June 2022
Pages 101-114

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History

  • Receive Date: 27 September 2021
  • Revise Date: 02 January 2022
  • Accept Date: 27 February 2022

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