Evaluation of expired linezolid and norfloxacin drugs as proficient environmentally safe inhibitors for mitigation of aluminum corrosion in sodium chloride medium

• Published in: Chemical Data Collections Vol. 42; p. 100960
• Main Author: Bahir, Areej Al
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2022
• Subjects: Aluminum; Corrosion; Drug inhibitors; Kinetics and mechanisms; Thermodynamics; Thermodynamics; Kinetics and mechanisms; Corrosion; Aluminum; Drug inhibitors
• ISSN: 2405-8300; 2405-8300
• DOI: 10.1016/j.cdc.2022.100960

•The inhibition of aluminum corrosion in 1.0 M NaCl solution was examined by the expired linezolid and norfloxacin drugs using various tools.•The examined expired drugs were found to be proficient inhibitors for aluminum corrosion.•Thermodynamic and kinetic parameters were evaluated and discussed.•The adsorption of the drugs’ molecules was found to accord with Langmuir isotherm.•The tested drugs act as mixed-kind inhibitors with cathodic majority.•The kinetics and mechanisms of aluminum corrosion and its inhibition were explained.•There is a good concordance between all utilized techniques. This paper highlighted how the expired linezolid and norfloxacin drugs can inhibit the corrosion of aluminum in 1.0 M NaCl. Chemical, electrochemical and microscopic tools were employed. The calculated inhibition efficiencies (% IEs) of the drugs were raised with their concentrations. The corrosion rate of aluminum was increased with rising [NaCl] and the% IEs were increased with the drugs’ concentration and reduced with rising temperature. The acquired higher% IEs were ascribed to strong adsorption of the drugs’ molecules on the aluminum surface and such adsorption was agreed with Langmuir isotherm. Thermodynamic and kinetic parameters were calculated that confirm the mechanism of physical adsorption. The used expired drugs behaved as mixed-kind inhibitors with cathodic priority. The kinetics and mechanisms of corrosion of aluminum and its inhibition by such drugs were explained. The gained results regarding to% IEs illuminated a good concordance between all utilized techniques. [Display omitted]