<i>Acacia nilotica </i>- A Mild Steel Corrosion Inhibitor in Sulphuric Acid Medium

Abstract

Plant extracts have become an essential renewable resource and eco-friendly for many applications by using corrosion inhibition. In this study, the inhibitive activity of water concentrates of the Acacia nilotica with 0.5M H2SO4 stock solution at different concentrations, was studied using the Gravimetric Method. To know the improved impact on the consumption of mild steel, extracts of the plant were characterized by Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM). SEM confirmed the formation of a protective layer on the surface of mild steel. Different techniques like UV-Visible and weight-loss analysis were studied to detect the organic natural compounds in the extract. Langmuir isotherm was fitted well for this study with a correlation coefficient (R2) of 0.999.