The effect of matcha-impregnated sodium montmorillonite on the corrosion mitigation of mild steel in saline medium

Corrosion is a harmful phenomenon for metals, which causes a decrease in strength. Today, the use of plants as a green corrosion inhibitor has received much attention. Herein, using a cation exchange process, matcha (M) was incorporated into the structure of sodium montmorillonite (Na+-MMT), and the anti-corrosion properties of the new nanoparticle (M-MMT) were investigated on mild steel in the saline solution phase. The results of Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) confirmed the authenticity of the new nanoparticle. The results of electrochemical impedance spectroscopy (EIS) and Raman spectroscopy showed that M-MMT improved the corrosion resistance. According to the results, matcha can be classified as considered a green inhibitor.