Chemical, electrochemical, and surface studies of Rosa damascene extract as a green corrosion inhibitor for carbon steel in sulfuric acid environment

Abstract

To develop an environmentally acceptable corrosion inhibitor Rosa damascene extract (RD) served as the main ingredient in H2SO4 pickling processes. X‐ray photoelectron spectroscopy (XPS), Fourier‐transform infrared spectroscopy (FT‐IR), technique of electrochemical impedance spectroscopy (EIS), polarization (PP) curves, and tests of weight loss (WL) have all been utilized to examine the inhibitory behavior of Rosa damascene on C‐steel corrosion in 1 M H2SO4 environment. The results show that the extract effectively inhibited the Zn′ corrosion in 1 M H2SO4. The inhibition was more effective at higher concentrations and temperatures. The inhibitory efficiency increased to 93.5% at a higher applied temperature (45°C) and higher Rosa damascene concentration (300 ppm). However, utilizing the weight loss method at potassium iodide addition, the inhibitory effectiveness of 300 ppm of Rosa damascene was synergistically increased from 75.0% to 96.1% at 25°C. Temkin isotherm was congruent with the adsorption process that produced the inhibitory impact on the C‐steel. The chemical adhesion of the Rosa damascene extract to the surface of the C‐steel was determined by the free energy of adsorption (ΔGoads = 40.5 kJ/mol.). In H2SO4 solution, corrosion of C‐steel may be prevented by the powerful inhibitor Rosa damascene extract.

The Use of Plant Extracts as Green Corrosion Inhibitors: A Review

“…Table 4 reports a summary of the performance of some corrosion inhibitors (plant-based) in different media. Juglans regia L. Mild steel HCl 95.00 [190] Rosa damascene Carbon steel H 2 SO 4 75-96.1 [191] Cinnamomum camphora Low carbon steel H 2 SO 4 89-97 [192] Olive leaf Copper KOH 90.68 [193] Justicia brandegeeana Carbon steel H 2 SO 4 82.41 [194] Coffee waste Carbon steel HCl 76-96 [195] Chamaerops humilis Carbon steel HCl 94 [196] Grape seed oil Carbon steel HCl 79 [197] Glebionis coronaria L. flower Mild steel HCl 95 [198] Fig leaf…”