SyzygiumCumini-assisted green synthesis of lead oxide nanoparticles (PbO-NPs): investigating the practical use of the PbO-SyzygiumCumini composite as corrosion inhibitor on mild steel in highly aggressive environmentSivakumar Sivalingam, Jayagopi Gayathri, K. Seethalakshmi, V. Rajesh Babu, G. Boopathy, and B. Subash Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and Technology, Avadi, Chennai, India
E-mail: drgayathrij@veltech.edu.in Received: 22 May 2025 Accepted: 17 August 2025 Abstract: AbstractInvestigation of corrosion inhibitive property of novel green synthesis of PbO-NPs was done using SyzygiumCumini, as corrosion inhibitor on mild steel in highly aggressive environment. The green synthesized nanoparticles were measured for its resistivity up to eight hours by gravimetric method. PbO-NPs were characterized by Fourier-transform infrared (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy-energy-dispersive X-ray analysis (SEM–EDX). The efficiency of corrosion inhibitor was measured by mass loss method, electrochemical impedance spectroscopy (EIS), phase angle and Bode plots, and potentiodynamic polarization (PDP). The cathodic currents were decreased, and the active corroding sites were completely blocked as the concentration of PbO-NPs increased from (100 to 500 ppm) of inhibitor, owing to formation of barrier on the surface of mild steel. It was also demonstrated that a decrease in the mass of mild steel in an aggressive environment is gradually reduced with increase in concentration of inhibitor, leading to an increase in inhibition efficiency. Graphical Abstract Keywords: Mild steel; SyzygiumCumini extract; Lead oxide nanoparticle; Scanning electron microscope (SEM); Potentiodynamic polarization; Electrochemical impedance spectroscopy (EIS) Full paper is available at www.springerlink.com. DOI: 10.1007/s11696-025-04327-7
Chemical Papers 79 (12) 8481–8490 (2025) |
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