Abstract
This study investigated the design and synthesis of a pH-responsive corrosion inhibitor hybrid based on zeolite imidazolate framework-8 (ZIF-8) structure as nanocarrier and the ionic liquid. The hybrid structure contained the room temperature ionic liquid, (1-(2-hydroxyethyl)-3-methylimidazolium dicyanamide as a green anti-corrosion agent. The XRD, BET, FT-IR, TGA, and FE-SEM techniques were utilized to study the morphological and fundamental features of the hybrid. The loading and releasing properties of the hybrid were studied using UV–Visible spectroscopy. Also, the efficiency criteria were evaluated for released inhibitors using electrochemical impedance spectroscopy (EIS). Based on the results, the long-term inhibition capability of synthesized hybrid for carbon steel was shown in 3.0 wt% NaCl solution. The maximum release rate of anti-corrosion agent occurs in strongly acidic and basic conditions from the mesoporous structure of ZIF-8.It was found that the hybrid structure encompasses a substantial amount of anti-corrosion IL within the next 30 h of releasing process. At the same time, the inhibition efficiency of the mixture rises with the immediate upturn of the inhibitor concentration. These results are potentially utilized in many applications anywhere the required active corrosion protection of materials is in demand.
Published Version
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