Application of Zizyphus Lotuse - pulp of Jujube extract as green and promising corrosion inhibitor for copper in acidic medium

摘要

The study of the inhibitory power of the Pulp of Jujube (PJ) extract of the plant Zizyphus Lotus with respect to the corrosion of copper in 1 M hydrochloric medium has been realized. This study was conducted by stationary and transients electrochemical measurements, weight loss and atomic absorption spectroscopy techniques. Scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS), Fourier transform infrared (FT-IR) and atomic force microscopy (AFM) studies were used to characterize the surface of uninhibited and inhibited copper specimens. The results showed that the inhibition increases with PJ extract concentration reaching a maximum of 93% at a concentration of 1 g L-1. The obtained results indicate that PJ extract can act as a good green corrosion inhibitor for copper in 1 M HCl. The effect of temperature was also investigated and thermodynamic parameters were determined and discussed. (C) 2018 Elsevier B.V. All rights reserved.