Green synthesis and corrosion inhibition study of 2-amino-N′-((thiophen-2-yl)methylene)benzohydrazide

Abstract

2-Amino-N′-((thiophen-2-yl)methylene)benzohydrazide (ATMBH) was synthesized by a conventional method, as well as by microwave (MW) irradiation. The MW assisted synthesis of ATMBH was found to have good yield and was more eco-friendly compared to the conventional method of synthesis. The synthesized compound ATMBH was characterized by FTIR, ¹H NMR, ¹³C NMR and CHN analysis. The corrosion inhibition performance of ATMBH in 0.5 M H₂SO₄ was analyzed by gravimetric and electrochemical methods. The potentiodynamic polarization study revealed that ATMBH acted as a mixed type of inhibitor. The results obtained from these methods are in good agreement and are well supported by the contact angle measurements.