Construction of a high-potency anti-corrosive metal-organic film based on europium (III)-benzimidazole: Theoretical and electrochemical investigations
Source abstract
Abstract
Abstract A series of unique metal–organic films (MOFs) with excellent corrosion protection properties were constructed over the mild steel (MS) surface through covalent bonding between the benzimidazole (BM) molecules and europium (Eu) cations. The corrosion resistance of the MS samples protected by BM:Eu film was evaluated by electrochemical and morphological approaches in 3.5% NaCl solution. The interactions between BM and Eu were investigated by Fourier-transformed infrared (FT-IR) spectroscopy. Also, the π-π*/n-π* electro-transitions in the BM:Eu molecules in NaCl solution were proved by the UV–Vis technique. The FE-SEM images and GIXRD spectra showed the BM:Eu film deposition over the MS surface. Besides, in the presence of BM:Eu the amount of iron oxide drastically decreased. The Tafel curves demonstrated the mixed corrosion inhibition mechanism of the BM:Eu mixture on MS surface in saline solution. Electrochemical impedance spectroscopy (EIS) analysis results evidenced about corrosion inhibition efficiency of about 97% for the MS sample subjected to the 3.5% NaCl solution containing 200:600 ppm BM:Eu inhibitors. In addition, the theoretical insights including quantum mechanics (QM) and molecular dynamics (MD) computations, supported the adsorption of europium/benzimidazole molecules on the MS adsorbent.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Concrete Corrosion and Durability · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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