Electrochemical and Microscopic Studies of the Mild Steel (MS) Surface by using Metronidazole Drug as A Green Inhibitor in 1M HCl Medium

In this paper using the metronidazole pharmaceutical drug compound as a green corrosion inhibitor that can be decreasing the rate of corrosion on metallic surface, as a result of the adsorption of metronidazole on the metal surface. In this regard, we simultaneously present an overview of metronidazole compound performance, as a corrosion inhibitor in 1M HCl, and with presence different concentrations of the drug. By using Electrochemical techniques (open-circuit potential, Potentio-dynamic polarization (PP), Electrochemical Impedance Spectroscopy (EIS), Electrochemical Frequency Modulation (EFM)) that illustrate the nature of adsorption. The surface examination by scanning electron microscopy (SEM), energy dispersive X-ray (EDX), atomic force microscopy (AFM), and Fourier transforms infrared (FT-IR) are confirmed the formation thin film that adsorbed on the metal surface according to the mechanism of the adsorption processes on the polarized metal surface.

The authors declare no conflict of interest.

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The datasets used in this study are openly available at [repository link] and the source code is available on GitHub at [GitHub link].

This work did not receive any external funding.