New Synthesized Nicotinonitrile Derivatives as Effective Corrosion Inhibitors for Carbon Steel in Acidic Environment: Electrochemical, Surface Analysis, and Quantum Methods
| Autor: | Abd El-Aziz S. Fouda, A. F. Melouk, A. H. El-Askalany, N. S. Elsheikh |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
020209 energy Mechanical Engineering Materials Science (miscellaneous) Inorganic chemistry Metals and Alloys Langmuir adsorption model Thio 02 engineering and technology Electrochemistry Corrosion symbols.namesake 020303 mechanical engineering & transports Adsorption 0203 mechanical engineering X-ray photoelectron spectroscopy Mechanics of Materials 0202 electrical engineering electronic engineering information engineering Materials Chemistry symbols Density functional theory Polarization (electrochemistry) |
| Zdroj: | Journal of Bio- and Tribo-Corrosion. 6 |
| ISSN: | 2198-4239 2198-4220 |
| DOI: | 10.1007/s40735-020-0329-2 |
| Popis: | 2-((2-Aminophenyl)thio)-4,6-dimethylnicotinonitrile (APTDN) and 4,6-dimethyl-2-(phenylamino) nicotinonitrile (DPAN) as new organic derivatives were investigated as corrosion inhibitors for C-steel in 1 M HCl at various temperatures (25–45 °C) using chemical and electrochemical methods. The adsorption of inhibitors on the C-steel surface fits to Langmuir adsorption isotherm and polarization curves showed that APTDN and DPAN are mixed corrosion inhibitors. The topography maps of atomic force microscopy, X-ray photoelectron spectroscopy, and Attenuated total refraction infrared were performed for examination of C-steel surface. Moreover, quantum chemical calculations using Density functional theory were carried out to correlate between theoretical and experimental data. |
| Databáze: | OpenAIRE |
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