Newly synthesized nanohybrids based on gallic acid derivatives for pipeline steel corrosion in hydrochloride acid medium

Abstract

The present study involves the synthesis and characterization of two innovative non-ionic surfactants and their nanohybrid derivatives, to evaluate their efficacy as corrosion inhibitors for pipeline metal. The synthesis procedure followed an environmentally benign method. Utilizing elemental analysis, Fourier infrared (FTIR), and NMR spectroscopy, the newly synthesized surfactants were verified and evaluated. Moreover, using UV–visible (UV–Vis) spectroscopy as well as examining electrons the structure of the prepared gold nanoparticles was analyzed with SEM, while their nanohybrid derivatives were verified. With the nanohybrid molecules, 99.9 % and 99.8 % at 200 ppm for NHTO and NHTS, respectively, the molecules demonstrated outstanding corrosion inhibitive efficacy in acidic environments. The molecules fit the Langmuir adsorption isotherms and under acidic circumstances were discovered to chemisorb on the mild steel surfaces with unrestricted energies of binding of −33.10 and − 33.67 kJ/mol for NHTO and NHTS molecules.