Corrosion Inhibition Property and Adsorption Behavior of P. tremula Leaf Extract in Acidic Media for Steel used in Petroleum Industry (SS-410)

Abstract—The objective of this study is to experimentally evaluate the inhibition properties of P. tremula leaf extract (PTLE) in a 15% hydrochloric acidic media for stainless steel (SS-410). Gravimetric, UV–visible spectroscopy, FTIR and surface morphological studies carried out using SEM, AFM, and XPS revealed that PTLE protected the SS 410 steel in 15% hydrochloric acidic medium. Gravimetric analysis revealed maximum 82.06% inhibition efficiency at 4 g/L inhibitor concentration. The computational studies (Quantum chemical calculations) were further utilized to understand the concept of chelation mechanism. The surface film formation and other 3-D features of PTLE film over SS-410 surface were confirmed using AFM studies. Adsorption of PTLE over SS-410 surface followed Langmuir adsorption isotherm. It is clear from the theoretical and computational studies that the PTLE acted as mixed type inhibitor by adsorption of hybrid organic- inorganic inhibitor ingredients on SS-410. Thus, PTLE can develop an efficient protective layer on SS-410 that has various industrial applications.