Biogenic Silver Oxide Nanoparticles for Inhibition of TMT Rod Corrosion in Marine Environment

Abstract

The current study explores the utilization of Thespesia populnea mediated biogenically synthesized silver oxide using as a protective coating for TMT rods in a marine environment. The process commenced with the extraction of the inhibitor from the leaves of the plant using ethanol followed by the preparation of silver oxide nanoparticles (AgONPs). Subsequently, TMT rods were coated with these AgONPs and subjected to the corrosive conditions of marine environment. In this investigation, AgONPs were synthesized employing chemical precipitation method and their size effects were thoroughly examined using techniques such as, Fourier Transform Infrared Spectroscopy, Fourier Ultraviolet-visible Spectroscopy and SEM. Remarkably, when TMT rods were coated with 10 layers of AgONPs, the corrosion rate efficiency escalated to 97.1% for 8 mm rods, 95.2% for 10 mm rods and 98.7% for 16 mm rods. Furthermore, the inhibition data conform to the Langmuir adsorption isotherm suggesting that the action of AgONPs followed a physical adsorption mechanism.