Study of new amphiphiles based on ferrocene containing thioureas as efficient corrosion inhibitors: Gravimetric, electrochemical, SEM and DFT studies

Three new ferrocene-based thioureas with different chain lengths were synthesized, characterized, and tested as surface active agent. To get insight of their various aspects of corrosion inhibition of mild steel in 1 M HCl, various standard methods were employed i.e., weight loss, electrochemical impedance spectroscopy, polarization, FT-IR, scanning electron microscopy, and DFT. The results obtained from these methods clearly revealed the linear dependency of inhibition potential with the surface activity, concentration of inhibitor molecules as well as the temperature of the system. The theoretical results were found to be in close agreement with the experimental measurements. (C) 2019 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.