Theoretical and electrochemical performance of Quinazoline Schiff-base hybrid as levelling agents for C-steel electropolishing in acidic medium.

ABSTRACT: This study leverages an innovative knowledge of electrolytic polishing (EP) mechanisms by introducing a newly synthesized Quinazolin Schiff-base hybrid (N-(arylidene)-2-(4-oxoquinazoline-3(4H)-yl) acetohydrazide (QA)) as a levelling agent for C-steel surfaces in 8M H₃PO₄. Several spectroscopic methods, including FT-IR, ¹H NMR, and ¹³C NMR, were employed to verify the chemical structures of QA derivatives. EP with QA derivatives, particularly N'-(3-Methylbenzylidene)-2-(4-oxoquinazolin-3(4H)-yl) acetohydrazide (m-CH3-QA), reduced surface roughness by 83.24%, smoothing defects. QA adsorption on C-steel followed a physical adsorption mechanism, supported by kinetic and thermodynamic analyses. Scanning electron microscopy (SEM), water contact angle (

SUBMITTER: Moustafa AHE 

PROVIDER: S-EPMC12635372 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature