Surface adsorption and anticorrosive behavior of benzimidazolium inhibitor in acid medium for carbon steel corrosion
- Title
- Surface adsorption and anticorrosive behavior of benzimidazolium inhibitor in acid medium for carbon steel corrosion
- Creator
- Kannan P.; Rajeev R.; Varghese A.; Rajendran N.
- Description
- Corrosion inhibition property of a newly synthesized 3-(4-chlorobenzoylmethyl) benzimidazolium bromide inhibitor against carbon steel corrosion in 1N hydrochloric acid solution was studied and analyzed utilizing various electrochemical methods. Electrochemical impedance study inferred that the inhibition efficiency increased with increasing inhibitor concentration and give 93.5% at 250ppm. Potentiodynamic polarization study emphasized that inhibitor acted as a mixed type inhibitor and the adsorption of inhibitor on the metal surface followed Langmuir adsorption isotherm. The noise results were in good correlation with other electrochemical results obtained. The increase of inhibition efficiency with concentrations of inhibitor is attributed to the blocking of the active area by the inhibitor adsorption on the metal surface. The thermodynamic parameter values were calculated and discussed to explain the adsorption mechanism of inhibitor in an acidic medium. The protective surface morphology governed by the inhibited medium was investigated using the scanning electron microscopic technique. The surface roughness of the sample in the absence and presence of inhibitor was obtained using atomic force microscopic study. The effect and reactivity of the inhibitor are further clarified with quantum chemical analysis. Finally, the corrosion protection mechanism is proposed on the ground of experimental and theoretical studies. Graphical abstract: [Figure not available: see fulltext.] 2022, The Author(s), under exclusive licence to Springer Nature B.V.
- Source
- Journal of Applied Electrochemistry, Vol-52, No. 11, pp. 1659-1674.
- Date
- 2022-01-01
- Publisher
- Springer Science and Business Media B.V.
- Subject
- Adsorption isotherm; Carbon steel; Electronic property; Noise analysis; Protection mechanism
- Coverage
- Kannan P., Corrosion Research Lab, HP Green R&D Centre, HPCL, Devanagundi, Karnataka, Bengaluru, 560 067, India, Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560 029, India; Rajeev R., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560 029, India; Varghese A., Department of Chemistry, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560 029, India; Rajendran N., Department of Chemistry, Anna University, Tamil Nadu, Chennai, 600 025, India
- Rights
- Restricted Access
- Relation
- ISSN: 0021891X; CODEN: JAELB
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Kannan P.; Rajeev R.; Varghese A.; Rajendran N., “Surface adsorption and anticorrosive behavior of benzimidazolium inhibitor in acid medium for carbon steel corrosion,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 24, 2025, https://archives.christuniversity.in/items/show/14881.