Institute for Color Science and Technology (ICST) Progress in Color, Colorants and Coatings 2008-2134 15 3 2022 07 01 Corrosion Inhibition Activity of Cefixime on Mild Steel Surface in Aqueous Sulphuric Acid 243 255 81808 10.30509/pccc.2021.166889.1133 EN S. TANWER Department of Chemistry, Manav Rachna University, Faridabad-221004, Haryana India. S. Kumar Shukla Department of Chemistry, Manav Rachna University, Faridabad-221004, Haryana India. Journal Article 2021 09 06 <em>Interaction of pharmaceutically active drug Cefixime on mild steel surface in 0.5 M sulphuric acid solution was studied using gravimetric analysis techniques, Polarization techniques, i.e., Polarization resistance, Tafel polarization, and Electrochemical Impedance Spectroscopy (EIS) techniques.<strong> </strong>It shows more than 96 % corrosion inhibition efficiency at an ambient temperature of 308 ^oK on a mild steel surface with a 4.0×10^-4M  inhibitor concentration. Gravimetric studies were also conducted at various temperatures and concentration ranges of the testing solution to justify their range of applicability at different practical conditions. And It is found very much suitable for its workings at the normal temperature and lower acid concentration ranges. Adsorption parameters and thermodynamic parameters were calculated from gravimetric analysis data. These parameters were obtained at different temperatures and concentration ranges and reveal that the inhibitor follows the physical adsorption mechanism. Langmuir's adsorption isotherm governs the adsorption of the cefixime molecule. Inhibition of cefixime on the surface of mild steel is supplemented by atomic force microscopy. The result reveals that the inhibited surface has less roughness than the uninhibited surface.</em> https://pccc.icrc.ac.ir/article_81808_1202fb7b9c4aa3bb38ab2a5152017319.pdf