DataVXApplied Physics APaper
journal article·2023-02Open access

Electrochemical detection of dopamine using green and chemical synthesized CuO/PANI nanocomposite modified electrode

Seleke J. Mokole, Ahmed Aliyu, Omolola E. Fayemi

Applied Physics A· Volume 129· Issue 2
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Source abstract

Abstract

Abstract Copper oxide (CuO) nanoparticles were synthesized using the chemical and green method routes and doped with polyaniline (PANI) to form PANI/CuOchand PANI/CuOgrnanocomposite. The microstructural properties of the nanocomposites were characterized by UV–Vis spectroscopy (UV), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy (EDS) detector. The electrochemical behavior of the CuOch, CuOgr, PANI/CuOch, and PANI/CuOgrelectrodes was investigated using cyclic voltammetry (CV), and square wave voltammetry (SWV), and the results showed an enhanced electrochemical catalytic activity toward dopamine (DA) on PANI/CuOgrelectrodes. SWV was conducted for the determination of DA with a linear range from 26 to 95 μM and a low limit of detection (LOD) of 8.22 μM. A comparison between the PANI/CuOchand PANI/CuOgrelectrodes and other modified electrodes toward detection of DA are comparable with the reported literature results.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Electrochemical sensors and biosensors · Conducting polymers and applications · Electrochemical Analysis and Applications

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