Adsorption behaviour of gluten hydrolysate on mild steel in 1 M HCl and its role as a green corrosion inhibitor

Abstract

The adsorption behavior and corrosion inhibition potentiality of gluten hydrolysate towards mild steel in 1 M HCl is investigated employing both electrochemical and weight loss techniques.

Natural Products for Material Protection: An Interesting and Efficacious Anticorrosive Property of Dry Arecanut Seed Extract at Electrode (Aluminum)–Electrolyte (Hydrochloric Acid) Interface

“…The quality of fitting to the electrical equivalent circuit was judged by the v 2 values. The obtained v 2 values (0.03898-0.00134) in the table indicate a good fit to the proposed circuit [47][48][49][50][51][52][53][54][55][56]. Percentage inhibition efficiencies values obtained from impedance studies, show the same trend as those obtained from Tafel plot and weight loss measurements.…”

Adsorption and anti-corrosion characteristics of vanillin Schiff bases on mild steel in 1 M HCl: experimental and theoretical study

“…56 For a broad range of degree of surface coverage, the nearly unity slope with a correlation coefficient (r 2 ) value in the order 0.999 for all the plots of C/q against C justies the suitability of the Langmuir model in the present case. The reciprocal of the intercept of the plot of C/q vs. C gives the K ads and DG 0 ads values according to eqn (21). These values are tabulated in Table 4.…”

“…The change in the nature of adsorption for compound B going from lower to higher temperature (endothermic to exothermic behaviour) was observed for other systems also. 21,59 Nevertheless, it still requires further experimentation at even higher temperatures to establish the phenomena unequivocally.…”

“…To determine the activation parameters related to the corrosion process, we plotted the corrosion rate data against temperature using the following equations: 21,59 log CR ¼ log l À E* 2:303RT (23)…”

“…Organic compounds containing N, S, and O atoms generally show good inhibition efficiency for mild steel in acidic media. [5][6][7][8][9][10][11][12] In addition to various heterocycles, 13 amines 14 and imines, 15 different other classes of organics, such as amino acids, 16,17 vitamins, 18 polysaccharides, 19 surfactants, 20 polypeptides, 21 lipids, 22 polyphenols 1 and others, have been reported to act as efficient corrosion inhibitors. Schiff bases are versatile compounds, which are synthesized via the condensation of primary amines and carbonyl compounds, and used widely in pharmaceuticals, agrochemicals and materials science.…”