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Inhibitive efficacy of Alstonia boonei leaves extract to combat acid corrosion of copper at the room temperature (30°C) was investigated using chemical method. Various corrosion parameters, viz. corrosion rate (ρcorr), inhibition efficiency (%IE), adsorption equilibrium constant (Kad), degree of fractional surface coverage () were evaluated using experimental data. Maximum inhibition efficacy was observed as 93.2% at 1.081g/L of Alstonia boonei extract and its adsorptive propensity was assessed by Quantum Chemical Analysis. The characterization techniques, viz. FT-IR, UV-Vis spectroscopy and surface morphological analysis tool (SEM) were used to endorse the results. The entire study shows that the Alstonia booei extract can be a promising greener anti-corrosive agent for copper in acid media.

Anti-Corrosive Propensity of Alstonia boonei towards Copper in 0.5 M HCl