A study on the inhibition effect of expired amoxicillin on mild steel corrosion in 1N HCl


Fadila B., Sihem A., Sameh A., Gulfeza K.

MATERIALS RESEARCH EXPRESS, vol.6, no.4, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 6 Issue: 4
  • Publication Date: 2019
  • Doi Number: 10.1088/2053-1591/aafcd7
  • Journal Name: MATERIALS RESEARCH EXPRESS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: corrosion, mild steel, weight loss, potentiodynamic polarization, EIS, HYDROCHLORIC-ACID SOLUTION, CARBON-STEEL, LEAF EXTRACT, DRUG, ADSORPTION, BEHAVIOR, MEDIA
  • Çukurova University Affiliated: Yes

Abstract

The adsorption and inhibitor effect of Expired Amoxicillin (E.A) on mild steel in 1 N HCl was studied by weight loss, potentiodynamic polarization, Electrochemical Impedance Spectroscopy (EIS), zero-charge potential method (PZC) and characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The inhibition efficacy obtained by gravimetry is 94.47% at 1800 ppm after 8 h immersion. Amoxicillin acts as a mixed inhibitor. The surface is negatively charged. E.A adsorption on mild steel surface obeys Langmuir isotherm, with a spontaneous process, the E.A molecules are physisorbed.