Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/4320
Title: Β-SITOSTEROL ISOLATED FROM RICE HULLS AS AN EFFICIENT CORROSION INHIBITOR FOR MILD STEEL IN ACIDIC ENVIRONMENTS
Authors: Mayakrishnan, Prabakaran
Seung-Hyun, Kim
Asokan, Sasireka
Venkatesan, Hemapriya
Ill-Min, Chung
Issue Date: 5-Apr-2017
Publisher: Royal Society of Chemistry
Abstract: β-Sitosterol has an inhibiting effect on the corrosion of mild steel. We investigated this effect in a H2SO4 solution using β-sitosterol-3-O-β-D-glucoside (β-sitosterol) isolated from rice hulls. Proton nuclear magnetic resonance, UV-visible spectroscopy, FT-IR spectroscopy, weight loss measurements, electrochemical studies, and atomic absorption spectroscopy were used to examine the inhibition of β-sitosterol on mild steel corrosion in a 1 M H2SO4 solution. The effect of temperature on the corrosion behavior of mild steel was examined in the range of 303–333 ± 1 K. The inhibition efficiency increased with increasing inhibitor concentration and decreased with increasing temperature. Electrochemical studies indicated that isolated β-sitosterol acted as a good corrosion inhibitor. The surface morphologies of the mild steel specimens were analyzed by scanning electron microscopy. The maximum inhibition efficiency of β-sitosterol (500 ppm) was 95%. The surface morphology was identified using scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM-EDS), and atomic force microscopy (AFM).
URI: https://doi.org/10.1039/C6NJ03760G
Appears in Collections:2.Article (26)



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