Inhibitive and adsorption properties of ethanol extract of Colocasia esculenta leaves for the corrosion of mild steel in H2SO4

International Journal of Physical Sciences

Nnabuk Okon Eddy¹ 

关键词: Corrosion;    mild steel;    inhibition;    Colocasia esculenta.;   

DOI  :  

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

Inhibitive and adsorption properties of ethanol extract ofColocasia esculentafor the corrosion of mild steel in H2SO4were investigated using weight loss, hydrogen evolution and IR methods of monitoring corrosion. The results obtained indicates that ethanol extract ofC. esculentais a good inhibitor for the corrosion of mild steel in H2SO4and its inhibitive action is attributed to its phytochemical constituents which aided its adsorption on the surface of mild steel. Calculated values of activation energy and inhibition efficiency at 303 and 333 K revealed that the mechanism of adsorption of ethanol extract ofC. esculentaon mild steel surface is physical adsorption. Also the adsorption of the inhibitor on mild steel surface was found to be spontaneous, endothermic and consistent with the assumptions of Langmuir adsorption isotherm.

【 授权许可】

CC BY