Evaluation of the inhibition effect of novel cyclohepta[b]pyridine derivatives for copper corrosion and theoretical calculations

Fathi, Ahlam M.; Anouar, El Hassane; Soliman, Hanan A.; Shamroukh, Ahmed H.; Kotb, Eman R.; Hegab, Mohamed I.

doi:10.1002/poc.4297

Cited by 3 publications

(1 citation statement)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The weight loss test and the electrochemical test proved that both 2-imidazolidinone and allantoin are available inhibitors for copper in 3.5 wt % NaCl compared to earlier reports for similar metal and corrosive medium in Table S5, − and the corrosion inhibition performance of 2-imidazolidinone was better than that of allantoin. Combined with the analysis of the above experimental results, 2-imidazolidinone and allantoin formed a physical adsorption film copper surface through Langmuir adsorption, and the adsorbed layer could isolate the corrosion of copper by the corrosion medium.…”

Section: Resultsmentioning

confidence: 42%

Interfacial Adsorption and Corrosion Inhibition Behavior of Environmentally Friendly Imidazole Derivatives for Copper in the Marine Environment

Tan

Sun

et al. 2023

Langmuir

View full text Add to dashboard Cite

Copper and copper alloys are commonly used in industry due to their excellent mechanical properties, making research on the corrosion resistance of copper of great significance. The corrosion inhibition properties of 2-imidazolidinone and allantoin for copper in 3.5 wt % NaCl were studied by weight loss and electrochemical tests. Changes in the density of the copper corrosion current and the impedance module indicated that 2-imidazolidinone and allantoin exhibited cathodic corrosion inhibitors and a valid protective effect. Meanwhile, the weight loss tests showed that the inhibition efficiency of 2-imidazolidinone and allantoin at 3 mM reached 98.94% and 97.82%, respectively. The surface physiochemical properties were qualitatively and quantitatively studied by using SEM-EDS, XPS, white light interferometry, and contact angle analysis. The interfacial adsorption behavior revealed by QCM, synchrotron radiation micro-infrared, and adsorption isotherm analysis indicated that both imidazole derivatives formed an effective and rigid physical adsorption film and obeyed the Langmuir adsorption model on copper, while both the mass and thickness of the adsorption film formed by 2-imidazolidinone were higher than those of allantoin. This study contributed to an in-depth understanding of the interfacial adsorption behavior and corrosion inhibition ability of 2-imidazolidinone and allantoin and provided guidelines for the design and development of novel heterocycles as potential corrosion inhibitors for copper in marine environments. In particular, copper was used as a corrosion inhibitor in seawater storage and transport equipment.

show abstract

Section: Resultsmentioning

confidence: 42%

Interfacial Adsorption and Corrosion Inhibition Behavior of Environmentally Friendly Imidazole Derivatives for Copper in the Marine Environment

Tan

Sun

et al. 2023

Langmuir

View full text Add to dashboard Cite

show abstract

Electrochemical, molecular dynamics, density functional theory, and corrosion inhibition studies of some chromeno-oxadithiin and chromeno disulfide derivatives for mild steel in 3.5% NaCl

Fathi,

Anouar,

Ahmed

et al. 2023

J Solid State Electrochem

View full text Add to dashboard Cite

Eight derivatives of chromeno-oxadithiin and chromeno disulfide were greenly synthesized during the reactions of different derivatives of 3-Chloro-3-chlorosulfenylchromanones (2a–d) with potassium iodide. The chemical structure of the newly prepared compounds was confirmed by using different spectroscopic methods (IR, 1H &13C NMR, and MS). The redox properties of the prepared compounds were investigated via cyclic voltammetry where most of the compounds exhibited one quasi-reversible redox couple beside one irreversible reduction peak. The charge transfer process was found to be under diffusion control. Some of these compounds were studied as inhibitors for mild steel corrosion in 0.6 M NaCl by using electrochemical techniques. Both the electrochemical methods and the computational simulations proved that adding 1 × 10–3 M of Trispiro[cyclohexane-1,2′-chroman-3′,2″-2H-chromeno[3,4-e][1,3,4]oxadithiin-5″,1″′-cyclohexan]-4′-one(3b) to 0.6 M NaCl inhibited mild steel corrosion by an efficiency of 98.8%. The morphology of mild steel surface after 7 days of immersion in this solution studied by scanning electron microscope (SEM) and showed a homogenous surface. The theoretical studies showed that 1,2-Bis (3-chlorospirochroman-2,1′-cyclohexyl-4-one) disulfane (4b) is the most stable one with an electronic energy of − 3101 au. The effects of the methyl and cyclohexane groups, as well as the effects of heterolysis on the corrosion efficiency, were studied.

show abstract

Synergistic corrosion inhibition of 4-hydroxypyridine and halogen ions: Insights from interfacial nonlinear spectroscopy

Hu,

Feng,

Ren

et al. 2024

The Journal of Chemical Physics

View full text Add to dashboard Cite

4-Hydroxypiridine (4-HPy) is a green chemistry corrosion inhibitor for low-carbon steel, valued for its environmental compatibility and low toxicity. Despite lower initial effectiveness than 4-mercapto/4-aminopyridine, 4-HPy’s performance is markedly enhanced by halogen ions. By employing second harmonic generation (SHG) spectroscopy combined with electrochemical methods, Raman spectroscopy, atomic force microscopy, x-ray photoelectron spectroscopy, and in situ UV spectroscopy, this study elucidates the synergistic enhancement mechanism of 4-HPy with Cl−, Br−, and I− in 0.5 mol/L HCl solution. Time-dependent SHG measurements showed a two-step process of rapid adsorption and subsequent orientation change, with a proposed mechanism to interpret the temporal changes in SHG intensity. Deducing the adsorption kinetic equations and their application to the experimental data yields the adsorption rate (kad) and orientation change rate (Kre). Halogens reduce the orientation angle of 4-HPy, facilitating its adsorption on the substrate surface and effectively inhibiting corrosion via distinct mechanisms. Cl− and Br− ions primarily adsorb onto the metal surface, forming an adsorption film that not only enhances the subsequent adsorption of 4-HPy but also provides a protective effect for the metal surface. Conversely, I− forms mainly complexes with 4-HPy in solution, co-adsorbs onto the metal surface, and demonstrates a significant synergistic effect. This study revealed the synergistic efficacy hierarchy among halogen ions, with the order 4HPy + NaCl < 4HPy + NaBr < 4HPy + NaI. This study enhances our molecular-level understanding of the synergistic mechanism between halogen ions and corrosion inhibitors and provides valuable insights for designing and developing effective corrosion inhibitors.

show abstract

Evaluation of the inhibition effect of novel cyclohepta[b]pyridine derivatives for copper corrosion and theoretical calculations

Cited by 3 publications

References 48 publications

Interfacial Adsorption and Corrosion Inhibition Behavior of Environmentally Friendly Imidazole Derivatives for Copper in the Marine Environment

Interfacial Adsorption and Corrosion Inhibition Behavior of Environmentally Friendly Imidazole Derivatives for Copper in the Marine Environment

Electrochemical, molecular dynamics, density functional theory, and corrosion inhibition studies of some chromeno-oxadithiin and chromeno disulfide derivatives for mild steel in 3.5% NaCl

Synergistic corrosion inhibition of 4-hydroxypyridine and halogen ions: Insights from interfacial nonlinear spectroscopy

Contact Info

Product

Resources

About