The Inhibition Effect of Cefotaxime Drug Towards The Corrosion of Copper in Acidic Solutions

Abstract

In this research, the use of cefotaxime as corrosion inhibitor for copper in nitric acid solution has been performed through weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS). The effect of inhibitor concentration, temperature and immersion time against inhibitor action was investigated. Results show that cefotaxime may be used as an efficient inhibitor for copper in nitric acid solutions. Potentiodynamic polarization studies reveal that cefotaxime acts as a mixed-type inhibitor without any change in the mechanism of hydrogen evolution. The adsorption of this compound on copper surface obeys Langmuir’s adsorption isotherm and has a physiosorption mechanism.