New Benzohydrazide Derivative as Corrosion Inhibitor for Carbon Steel in a 1.0 M HCl Solution: Electrochemical, DFT and Monte Carlo Simulation Studies
| Autor: | Santosh L. Gaonkar, Subrahmanya K Bhat, K. Toumiat, Shehdeh Jodeh, Rachid Salghi, Abdelkarim Chaouiki, Hassane Lgaz, H. Oudda |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Carbon steel Double-layer capacitance engineering.material HCl 010402 general chemistry DFT 01 natural sciences Monte Carlo simulations Corrosion symbols.namesake Corrosion inhibitor chemistry.chemical_compound Adsorption Electrochemistry Polarization (electrochemistry) 010405 organic chemistry carbon steel Langmuir adsorption model corrosion inhibition 0104 chemical sciences Dielectric spectroscopy chemistry benzohydrazide derivative symbols engineering Physical chemistry |
| Zdroj: | Portugaliae Electrochimica Acta, Volume: 37, Issue: 3, Pages: 1-9, Published: MAY 2019 Portugaliae Electrochimica Acta v.37 n.3 2019 Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP |
| ISSN: | 1647-1571 |
| DOI: | 10.4152/pea.201903147 |
| Popis: | The present study aimed to evaluate the inhibition effect of an organic compound, namely, (E -N'-(2-hydroxybenzylidene) isonicotinohydrazide (BIH), for carbon steel corrosion in a 1.0 M HCl solution, by using weight loss (WL), potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS). Results show that BIH is a good inhibitor, and the percentage of inhibition efficiency increases on its higher concentrations. The maximum inhibition efficiency of 94% was obtained at 5×10-3 M. Polarization studies revealed that the BIH compound acts as a mixed type inhibitor. EIS showed that increasing the concentration of the inhibitor led to an increase in the charge transfer resistance and a decrease in the double layer capacitance. It was found that the adsorption of this compound obeyed the Langmuir adsorption isotherm. The associated activation energies and thermodynamic parameters of the adsorption process were evaluated and discussed. The temperature effect was studied in the range from 303 to 333 K. In addition, quantum chemical calculations based on the density function theory (DFT) and Monte Carlo simulations were done to support the experimental results. |
| Databáze: | OpenAIRE |
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