Experimental complemented with microscopic (electronic/atomic)-level modeling explorations of Laurus nobilis extract as green inhibitor for carbon steel in acidic solution

In the present study, comprehensive research efforts were made to experimentally/theoretically examine the corrosion protection capability of Laurus nobilis leaves extract for carbon steel in an acidic medium composed of 1 M HCl. The experimental EIS results evidenced that upon steel exposure to a corrosive electrolyte containing 400 ppm L nobilis leaves extract the maximum protection performance of 92% was obtained after 2.5 h. The experiments of potentiodynamic polarization proposed a mixed-type anodic/ cathodic anti-corrosion action along with small cathodic prevalence. The electronic features established by the DFT approach highlighted that the surface adsorption mechanism could be described by donoracceptor interactions. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.