A quantum chemical and experimental study on the protective performance of N-(4-(piperidin-1-ylsulfonyl)phenyl)acetamide for mild steel corrosion

Abstract

In this study, the anticorrosive potential of N-(4-(piperidin-1-ylsulfonyl)phenyl)acetamide (PSPA) in the 1M HCl solution has been investigated. An inhibitory efficiency of 96% at 30 ppm is achieved using the polarization, mass reduction, and impedance approaches. To pinpoint the precise modes of the adsorption process, the kinetic, thermodynamic, and adsorption parameters are studied at various temperatures. The protective probability of the examined inhibitor is further evaluated by employing Density Functional Theory. Additional crucial information on the inhibitory mechanism is provided by the Fukui condensed function. Conclusively, various parameters are used to confirm the protective properties of the thin film, including SEM, EDS, and AFM.