Chemical, Electrochemical and Quantum Chemical Studies for Famotidine Drug as a Safe Corrosion Inhibitor for α-Brass in HCl Solution

• Published in: Protection of metals and physical chemistry of surfaces Vol. 57; no. 2; pp. 398 - 411
• Main Authors: Fouda, A. S., Ahmed, R. E., El-Hossiany, A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.03.2021; Springer Nature B.V
• Subjects: Atomic force microscopes; Atomic force microscopy; Characterization and Evaluation of Materials; Chemistry and Materials Science; Corrosion; Corrosion and Coatings; Corrosion inhibitors; Corrosion prevention; Corrosion tests; Electrode polarization; Fourier transforms; Frequency modulation; Industrial Chemistry/Chemical Engineering; Infrared analysis; Infrared spectra; Infrared spectroscopy; Inorganic Chemistry; Materials Science; Metallic Materials; Physicochemical Problems of Materials Protection; Quantum chemistry; Spectrum analysis; Tribology; Weight loss; X ray spectra; α-brass; HCl; famotidine; AFM; FT.IR; EDX; SEM; EFM; EIS
• ISSN: 2070-2051; 2070-206X
• DOI: 10.1134/S207020512101010X

Expired Famotidine was tested as a corrosion protection for α-brass in 1 M HCl using modified methods: weight loss (WL), Tafel polarization (TP), AC impedance spectra (EIS) and electrochemical frequency modulation (EFM). The polarization resistance ( R p ) data increased with increasing famotidine dose. The inhibition efficiency (IE) improved with raising famotidine concentration. The maximum IE of 90% has been achieved at 300 ppm. On the other hand, the efficiency lowered with temperature increased. The outcome data obtained revealed that famotidine performed excellently as a corrosion inhibitor for α‑brass in this medium at dissimilar temperatures. The surface of α-brass was tested utilizing scanning electron microscope (SEM), energy dispersion spectroscopy X-ray spectra (EDX), Fourier transform infrared spectroscopy (FT–IR), and atomic force microscopy (AFM analysis).