Anticorrosion performance of biopolymer pectin on 6061 aluminium alloy: Electrochemical, spectral and theoretical approach

Fathima, Huda and Pais, Mikitha and Padmalatha, * (2021) Anticorrosion performance of biopolymer pectin on 6061 aluminium alloy: Electrochemical, spectral and theoretical approach. Journal of Molecular Structure, 1243. ISSN 0022-2860

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Abstract

Pectin (PECT), a carbohydrate polymer, is presented as an active, environmentally benign inhibitor to at�tenuate the 6061 aluminium alloy acid corrosion. The study was performed by adopting electrochemical and spectroscopic procedures. Surface studies were performed by scanning electron microscopy (SEM),energy dispersion X-ray studies (EDX), and atomic force microscopic (AFM) technique. Mode of adsorp�tion of PECT on the surface of the alloy was arrived at by applying appropriate adsorption isotherm, which is further confirmed spectral studies like FT-IR and UV–visible spectroscopy. Adsorption of PECT was reiterated by quantum chemical calculations using density functional theory (DFT). Pectin emerged as a potent green inhibitor with an inhibition efficiency of around 80% for the addition of 800 ppm of it. DFT calculations contributed a deeper insight in systematic understanding of the mechanism of the corrosion inhibition process.

Item Type: Article
Uncontrolled Keywords: lectrochemical studies Spectroscopy Surface morphology Computational calculations Green inhibitor
Subjects: Engineering > MIT Manipal > Chemistry
Depositing User: MIT Library
Date Deposited: 23 Jun 2022 04:13
Last Modified: 23 Jun 2022 04:13
URI: http://eprints.manipal.edu/id/eprint/158720

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