2017/06/10 by A. Batah, A. Anejjar, Batah, A. +13
Engineering · Materials Science · #Carbon Steel #Concrete Corrosion and Durability #Corrosion Behavior and Inhibition #Grapefruit #Hydrogen embrittlement and corrosion behaviors in metals #Leaves #Rind #corrosion inhibition #green inhibitor
paper · doi:10.48317/imist.prsm/morjchem-v5i3.9201
openalex publication_date 2017/06/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/01
The inhibition potentials of methanol extracts of leaves (GFL) and rind (GFR) of Grapefruit plant was investigated by evaluating the corrosion behaviour of carbon steel metal immersed in 1.0 M HCl solution containing various concentrations of the extracts. Electrochemical technical, Gravimetric measurements and adsorption characterization were utilized to evaluate the corrosion inhibition and adsorption properties of the extracts. The results revealed that the studied extracts were efficient inhibitors of corrosion in carbon steel immersed in 1.0 M HCl and that the inhibition efficiency depends on the concentration of the extracts. The activation energies and the negative free energy of adsorption obtained from the adsorption of methanol extracts of leaves and rind of Grapefruit indicate that the methanol extracts were physically adsorbed on the surface of the carbon steel and that the adsorption is endothermic, spontaneous, strong and fit excellently with the assumptions of the Langmuir adsorption isotherm. The activation parameters are determined and discussed.