Document Type : Original Research Article
Authors
Department of Chemistry, Federal University of Agriculture, PMB, 2373, Makurdi, Benue State, Nigeria
Abstract
Green synthesis of silver nanoparticles using stem bark extract of Lonchocarpus laxiflorus plant as a reducing agent following a simple, effective, and eco-friendly route was reported in this work. UV-vis, FTIR SEM/EDX, and Backscatter Electron Detector (BSD) analysis were employed in the characterisation of the nanoparticles synthesised. The dispersed nanoparticles were found to have mean particle size of 2.3 nm. The resultant nanoparticles were tested for corrosion inhibition potential of mild steel as a possible alternative to the expensive and environmentally harmful inorganic inhibitors. The composite has proven to be effective inhibitor of corrosion of mild steel in 1.0 M HCl. Further treatment of the experimentally determined results showed that the values of the activation energies were all less than 80 KJmol-1, indicating physical adsorption of the composite to the mild steel surface according to Langmuir’s isotherm. The behaviour of this mixed-type inhibitor was endothermic in nature and followed associative mechanism.
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