Electrochemical Evaluation of an Outdated Antifungal Drug as Corrosion Inhibitor of Mild Steel in Neutral Chloride Media

Bustos-Terrones, Victoria; Campos, Carmina Menchaca; Romo, Mario Romero; Schutz, Juan Marcos Esparza; Domı́nguez, Armando; Chavarín, Jorge Uruchurtu

doi:10.2174/2352094905666150622183729

Cited by 4 publications

(3 citation statements)

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“…Preliminary evidence of anti-corrosion behaviour of fluconazole on mild steel by using a neutral chloride/ sulphate solution has been described in [25]. In this study, the best fluconazole inhibitor concentration was 150 mg L −1 and achieved inhibition efficiencies above 80%.…”

Section: Introductionmentioning

confidence: 58%

Synthesis, characterisation and electrochemical evaluation of a functionalised coating for mild steel corrosion protection

Bustos-Terrones

Uruchurtu

Rochín-Medina

et al. 2019

Surface Engineering

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A functionalised coating for mild steel corrosion protection was prepared in this study. A composite material SBA-15 (silicon oxide) was used as a mild steel corrosion inhibitor. The porous matrix (SBA-15) was loaded with fluconazole (F), as an inhibitor container. A sol-gel technique was used to synthesise SBA-15; and the active molecule (F) was extracted from an outdated medication using methanol as solvent. The final composite was obtained by SO 2 dispersion in a methanol-F solution. The composite material was dispersed in a nitrocellulose resin, and it was characterised by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscope (TEM), Fourier Transform Infrared Spectrometry (FTIR), and physical adsorption of Nitrogen. Coatings were electrochemically evaluated by electrochemical impedance spectroscopy (EIS) tests, using a chloride/sulphate solution prepared from NaCl and (NH 4 ) 2 SO 4 . The results demonstrated the effectiveness of the inhibitor delivery system and the consequent protection of metal against the corrosion process.

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Section: Introductionmentioning

confidence: 58%

Synthesis, characterisation and electrochemical evaluation of a functionalised coating for mild steel corrosion protection

Bustos-Terrones

Uruchurtu

Rochín-Medina

et al. 2019

Surface Engineering

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“…Flu was obtained from expired pharmaceuticals by dissolving a capsule of the drug in 20 mL of methanol and subsequently evaporating the solvent.…”

Section: Methodsmentioning

confidence: 99%

SBA15–Fluconazole as a Protective Approach Against Mild Steel Corrosion: Synthesis, Characterization, and Computational Studies

et al. 2018

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A SBA15–Fluconazole composite (SBA15‐Flu) was prepared to formulate a self‐healing coating for mild steel. The composite was obtained by dispersing SBA15 in a methanolic solution containing Fluconazole (Flu). The materials were characterized by using different techniques. Electrochemical impedance spectroscopy (EIS) was used for protective behavior evaluation of the coatings on mild steel substrates in an electrolytic solution prepared from sodium chloride and ammonium sulfate. The EIS results indicate that the inhibitor trapped in the SiO2 matrix is released when it comes into contact the aggressive solution, thus protecting the metal. To understand the inhibitor release mechanism, docking studies were used to model the SBA15‐Flu complex, which allowed us to further determine polar and non‐polar contributions to the binding free energy. An analysis of the electron density within the quantum theory of atoms in molecules and the non‐covalent interaction index frameworks were also carried out for the most favorable models of SBA15‐Flu. The results indicate that the liberation rate of the Flu molecules is mainly determined by the formation of strong O−H⋅⋅⋅O, O−H⋅⋅⋅N, and O−H⋅⋅⋅F hydrogen bonds.

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“…One of the most practical techniques through which mild steel is protected is by using inhibitive drugs or organic inhibitor, which is becoming more and more popular, considering the recent studies [12][13][14][15][16]. The effectiveness of organic molecules is a function of their ability to adhere to the metal surface, which can distinctly alter the corrosion mitigating properties of mild steel in different corrosive environment [17][18][19][20][21]. Drug inhibitors have drawn much attention due to their simplicity of synthesis, high efficiency, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Inhibitive Characteristics of Cefalexin Drug Addition on Corrosion Evolution of Mild Steel in Chloride Medium

Fayomi

Akande

Ighravwe

et al. 2021

KEM

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The inhibition effect of Cefalexin on the corrosion of mild steel in sodium chloride has been examined with the use of weight loss and potentiodynamic polarization methods at ambient temperature. Cefalexin showed good protection ability by adsorbing on the mild steel surface. The mixed inhibition characteristics of Cefalexin were revealed by the Potentiodynamic polarization results. The inhibitor efficiency was found to be above 65% obeying the Langmuir and Freundlich isotherm law with correlation regression coefficients of R2 = 0.9984 and R2 = 0.9488, respectively. The closeness of these R2 values to unity established the reliability of Cefalexin as an inhibitor.

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Electrochemical Evaluation of an Outdated Antifungal Drug as Corrosion Inhibitor of Mild Steel in Neutral Chloride Media

Cited by 4 publications

References 0 publications

Synthesis, characterisation and electrochemical evaluation of a functionalised coating for mild steel corrosion protection

Synthesis, characterisation and electrochemical evaluation of a functionalised coating for mild steel corrosion protection

SBA15–Fluconazole as a Protective Approach Against Mild Steel Corrosion: Synthesis, Characterization, and Computational Studies

Inhibitive Characteristics of Cefalexin Drug Addition on Corrosion Evolution of Mild Steel in Chloride Medium

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