8-hydroxyquinoline grafted triazole derivatives as corrosion inhibitors for carbon steel in H2SO4 solution: Electrochemical and theoretical studies
| Autor: | Z. Rouifi, T. Laabaissi, H. Oudda, Fouad Benhiba, Abdelkader Zarrouk, Brahim Lakhrissi, Ismail Warad, M. El Faydy, A. Guenbour |
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| Rok vydání: | 2021 |
| Předmět: |
Langmuir
Carbon steel Scanning electron microscope General Chemical Engineering General Engineering General Physics and Astronomy 8-Hydroxyquinoline 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences Corrosion Dielectric spectroscopy chemistry.chemical_compound chemistry Triazole derivatives engineering General Materials Science 0210 nano-technology Nuclear chemistry |
| Zdroj: | Ionics. 27:2267-2288 |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-021-03974-6 |
| Popis: | The inhibition capacity of carbon steel (CS) in 0.5M H2SO4 by three 8-hydroxyquinoline grafted triazole derivatives (EHTC, AHTC, and MHTC) have been investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PPD), and weight loss measurements (WLM) at 298 K. Generally, the results clearly show that the inhibition performance (η %) increases with an increase in the concentration of EHTC, MHTC, and AHTC, reaching a maximum value of 95.5% (EHTC), 95.1% (MHTC), and 94.1% (AHTC) at the optimal concentration (10−3 M) for PPD technical. The PPD shows that EHTC, AHTC, and MHTC behave as mixed-type inhibitors. In addition, the inhibitor obeys the single layer adsorption isotherm of Langmuir. Scanning electron microscopy (SEM) analysis of the CS has also been investigated and discussed. The theoretical calculations and MD simulations show a better correlation with the experimental results for the studied triazole derivatives. |
| Databáze: | OpenAIRE |
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