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- W3189251748 endingPage "131256" @default.
- W3189251748 startingPage "131256" @default.
- W3189251748 abstract "• Isonitrosoacetanilide and isonitrosoacetanilide derivatives were evaluated as corrosion inhibitors for mild steel in 1 mol L −1 HCl; its maximum inhibition efficiency was 97.6% for 2-Bromoisonitrosoacetanilide at room temperature. • The isonitrosoacetanilides act as a mixed type inhibitor with predominantly cathodic effect. • Computational studies corroborated that the isonitrosoacetanilides are adsorbed on the mild steel surface by physisorption. • The bromo atom and methoxy group may play an important role in the inhibition process. • There is a good correlation between theoretical and experimental results. The isonitrosoacetanilide, 2-bromoisonitrosoacetanilide and 2-methoxyisonitrosoacetanilide were synthesized and investigated as mild steel corrosion inhibitors in 1 mol L −1 HCl solution by potentiodynamic polarization curves, electrochemical impedance, weight loss measurements, scanning electron microscopy analysis and theoretical calculations. The weight loss measurements varying temperature show that the isonitrosoacetanilides are adsorbed on the mild steel surface by physisorption. The adsorption of inhibitor obeys the Langmuir's adsorption isotherm and the adsorption is an exothermic process with a decrease in entropy. The Tafel polarization method reveals that the inhibitors act as mixed type inhibitor. The obtained experimental results suggested that the maximum inhibition efficiency of isonitrosoacetanilide derivatives were over 90% at 5 × 10 −3 mol L −1 at 25 °C. The weight loss measurements and electrochemical results were confirmed with scanning electron microscopy (SEM). Quantum chemical calculation was applied to correlate electronic structure parameters of isonitrosoacetanilides molecules with their corrosion inhibition performances and showed that possibly the adsorption process is of the physical type. The 2-bromoisonitrosoacetanilide and 2-methoxyisonitrosoacetanilide results were slightly superior to those obtained in the presence of isonitrosoacetanilide, showing that the bromo atom and methoxy group enhances the inhibitory properties." @default.
- W3189251748 created "2021-08-16" @default.
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- W3189251748 date "2021-12-01" @default.
- W3189251748 modified "2023-10-17" @default.
- W3189251748 title "Experimental and theoretical studies of isonitrosoacetanilides derivatives as corrosion inhibitors for mild steel in 1 mol L−1 HCl" @default.
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- W3189251748 doi "https://doi.org/10.1016/j.molstruc.2021.131256" @default.
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