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VOL. 9, ISSUE 2 (2025)
Synthesis, characterization, and evaluation of corrosion inhibition efficiency of 5-((pyridin-3-yloxy) methyl)-1,3,4-oxadiazole-2-thiol (PODT) for Mild Steel in 1 n HCL
Authors
Kanha Singh Tiwari, Shailendra Yadav
Abstract
A novel heterocyclic compound, 5-((pyridin-3-yloxy)
methyl)-1,3,4-oxadiazole-2-thiol (PODT), was synthesized and evaluated as a
corrosion inhibitor for mild steel in 1 N HCl. The synthesized compound was
characterized by FT-IR, ¹H NMR, elemental analysis, and melting-point
determination. Corrosion inhibition performance was assessed using weight-loss
and potentiodynamic polarization techniques at different concentrations
(100–500 ppm, 300-500 ppm respectively) and temperatures (30–65 °C). The
inhibition efficiency increased with concentration, reaching 96.37 % at 500 ppm
and 30 °C by weight-loss and 98.1 % by electrochemical analysis. The negative
shift in corrosion potential and simultaneous decrease in corrosion current
density indicated mixed-type inhibition behavior. The superior performance of
PODT is attributed to its multiple donor sites (N, O, S) and π-electron systems
that favor adsorption and stable protective film formation on the metal
surface. These findings suggest that PODT is an efficient and environmentally
promising corrosion inhibitor for industrial applications.
Pages:58-60
How to cite this article:
Kanha Singh Tiwari, Shailendra Yadav "Synthesis, characterization, and evaluation of corrosion inhibition efficiency of 5-((pyridin-3-yloxy) methyl)-1,3,4-oxadiazole-2-thiol (PODT) for Mild Steel in 1 n HCL". International Journal of Chemical Science, Vol 9, Issue 2, 2025, Pages 58-60
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