The Electrochemical Variation of a Kind of Protein Staining and Food Dye as a New Corrosion Inhibitor on Mild Steel in Acidic Medium

Abstract

In this study, the relevance of a food dye, namely, Fast Green-FCF (FG-FCF), was surveyed as a new inhibitor for mild steel in HCl solution. This effect was specified by electrochemical impedance spectroscopy (EIS), one of the most widely used measurement techniques. As a result of the increment of the inhibitor concentration, it was seen that the values ​​of polarization resistance increased and covered the metal surface of FG-FCF like a blanket. Tests endorse that the FG-FCF is chemically adsorbed on mild steel surface, according to the Langmuir isotherm. With surface characteristic analyses, such as field emission scanning electron microscope (FESEM) and atomic force microscope (AFM), it was further determined that the metal surface in HCl of FG-FCF was protected. By applying the hydrogen gas evolution technique, FG-FCF has been proven to provide the lowest surface area with all inhibited solutions from the blank due to its strong adsorption to the metal surface. Finally, it has been clarified that FG-FCF can be practically used as a good corrosion inhibitor for mild steel with the supported results.

Use of Experimental Designs to Evaluate the Influence of Methyl Green Dye as a Corrosion Inhibitor for Carbon Steel in Perchloric Acid

“…The study of corrosion process and its inhibition by organic compounds, such as dyes, is a very active field of research in acidic or basic environments [7][8][9][10][11][12][13]. Dyes have long been applied in the coloring, printing, paper, leather, textile, plastics, cosmetic, medical, pharmaceutical, and agri-food industries, and in recent times as corrosion inhibitors of metals and alloys in aggressive environments [14,15].…”

The role of Lavandula sp. extract for effective inhibiting the mild steel corrosion in the hydrochloric acid solution

“…Impedance spectroscopy is one of the fastest and easiest methods that are often preferred in researching the protective properties of all these molecules on metals in aggressive solutions, whether the inhibitor used is organic molecules or inhibitors of plant origin. [22][23][24] For this reason, electrochemical behaviour of mild steel was evaluated by measuring with EIS at the end of one, 24 and 120 h immersion times in 1.0 M HCl solutions containing four different concentrations of Lavandula (0.100%, 0.050%, 0.300% and 0.500% (w/v)) and not containing inhibitor. The equivalent circuits of the corrosion process were constituted from these results by utilizing Zview2 software.…”

Corrosion Inhibition Efficiency, Experimental and Quantum Chemical Studies of Neutral Red Dye for Carbon Steel in Perchloric Acidic Media

“…Studies on corrosion inhibition performance of dyes have shown that organic dyes are effective in retarding the corrosion in acid or base environments. 3,4 Different types of dyes are commercially available. They are produced annually to be applied in various domains including paper industries, printing, plastics, cosmetics, leather, textile industry, pharmaceuticals, agrofood industries and medical industry.…”