Green corrosion inhibition has emerged as an important research area due to increasing environmental regulations and the need for sustainable industrial practices. This review summarizes recent progress in the development of green synthesized nano-inhibitors for corrosion protection of metals exposed to aggressive environments. Particular attention is given to plant-based extracts and other renewable resources used in nanoparticle synthesis, as well as their physicochemical properties, adsorption behavior, and inhibition performance. The corrosion protection mechanisms are discussed using insights from electrochemical techniques, surface characterization methods, and thermodynamic and kinetic analyses, complemented by computational approaches. A comparison with conventional synthetic inhibitors highlights the superior environmental compatibility, biodegradability, and high efficiency of green nano-inhibitors at low concentrations. Existing challenges, including nanoparticle stability, variability of plant extracts, reproducibility, and scale-up limitations, are critically examined. The review provides a comprehensive understanding of current research trends and identifies future directions aimed at enhancing industrial applicability and long-term sustainability of green corrosion inhibition systems.
Musa Husaini (Fri,) studied this question.