Experimental and Theoretical Studies on the Corrosion Inhibition of Brass in Hydrochloric Acid by N-(4-((4-Benzhydryl Piperazin-1-yl) Methyl Carbamoyl) Phenyl) Furan-2-Carboxamide

Abstract

The corrosion inhibition effect of N-(4-((4-Benzhydryl piperazin-1-yl) methyl Carbamoyl) Phenyl) Furan-2-Carboxamide (BFC) on brass in 1M HCl has been investigated using weight loss method, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). The result reveals that BFC acts as a mixed type corrosion inhibitor with more pronounced effect on anodic domain and the inhibition efficiency of BFC increases with increase in temperature ranges from 30 ∘ C to 60 ∘ C. AC impedance implies that R ct value of BFC increases with increase in concentration. CV indicates that the addition of inhibitor controls the oxidation of the copper on the brass metal. The structural confirmation of BFC was carried out by the spectral studies like FT-IR, 1 H NMR, 13 C NMR, and the molecular weight was confirmed by LC-MS. Surface characterization of brass with BFC was analysed using scanning electron microscope (SEM). Quantum chemical parameter was used to calculate the electronic properties of BFC in order to confirm the correlation between the inhibitor effect and molecular structure of BFC. BFC has more negative charge on nitrogen and oxygen atom, which facilitates the adsorption of BFC on the surface of brass.

Computational approach for predicting the adsorption properties and inhibition of some antiretroviral drugs on copper corrosion in HNO3

“…Some antiretroviral have been used as steel corrosion inhibitors [18,19]. According to the literature, some eco-friendly inhibitor organic compounds have been shown to have good inhibition performance in the corrosion of metals [20][21][22][23]. In addition, these organic compounds studied contain heteroatoms such as nitrogen, oxygen, or sulphur and/or π-electrons.…”

Electrochemical Approaches for Material Conservation: Experimental and Theoretical Insights Using a Biopolymer

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