Use of Rosa canina fruit extract as a green corrosion inhibitor for mild steel in 1 M HCl solution: A complementary experimental, molecular dynamics and quantum mechanics investigation

Abstract

Rosa canina fruit extract was utilized for mild steel corrosion inhibition in 1M HCl solution. The inhibition efficiency of inhibitor was studied by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization test. Results revealed that R. canina fruit extract acted as a mixed type inhibitor and remarkably reduced the corrosion current density of mild steel from 110μA/cm2 (0ppm) to 44μA/cm2 (800ppm). The maximum corrosion inhibition efficiency (about 86%) was obtained using 800ppm inhibitor. The inhibitor adsorption on the mild steel surface significantly increased the water contact angle (about 50%).