Environment Stewardship Using <i>Mangifera indica</i> Kernel's Biochar Incorporated CeO ₂ Nanotubes Loaded With Self‐Healing Benzotriazole as Corrosion Resistant Coatings to Extend the Life of Mild Steel Meant for Industrial Aqueous Medium

ABSTRACT In this investigative study, a fresh amalgamated composite coating BTA@MBCENT (benzotriazole or BTA‐loaded mango kernel biochar or MB incorporated CeO 2 nanotubes, abbreviated as CENT) with varying weight percentages in epoxy resin is prepared and applied to cherish the environment for industries using mild steel, specifically using saline water (3.5% sodium chloride) circulation systems. The novel coating MBCENT was then employed to examine its life‐lengthening and self‐healing properties against corrosion, a priori and a posteriori incorporating BTA. After completing the necessary characterization, the coating formulations applied over mild steel surfaces exhibited a water‐repellent property. The release kinetics of self‐healing BTA inhibitor were evaluated using ultraviolet spectroscopy. Protection efficacy for the coated steel samples immersed is investigated through electrochemical methods. BTA@MBCENT (1.0%) demonstrated an exceptional protection efficiency of 88.63% within 42 days of immersion, suggesting the self‐healing coating may serve as a viable alternative to conventional anticorrosive coatings for mild steel against aggressive chloride ions of saline industrial water.