Improvement of the anticorrosion resistance of nickel by polypyrrole coating electrosynthesized in salicylate medium
| Autor: | El Arbi Bazzaoui, M. Bouabdallaoui, Z. Aouzal, Rongguang Wang, A. El Guerraf, S. Ben Jadi, Mohammed Bazzaoui |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Supporting electrolyte 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Polypyrrole 01 natural sciences Dielectric spectroscopy chemistry.chemical_compound chemistry X-ray photoelectron spectroscopy Coating 0103 physical sciences engineering Cyclic voltammetry Fourier transform infrared spectroscopy 0210 nano-technology Anodic protection Nuclear chemistry |
| Zdroj: | Materials Today: Proceedings. 31:S89-S95 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2020.06.237 |
| Popis: | In the present paper, we investigated the possibility of enhancing anticorrosion properties of polypyrrole (PPy) films obtained electrochemically on nickel substrate. The oxidation of pyrrole monomer has been achieved in aqueous medium containing sodium salicylate as supporting electrolyte using cyclic voltammetry and galvanostatic methods. Several techniques such as Fourier transform infrared (FTIR) and X-ray photoelectron and (XPS) spectroscopies were carried out for vibrational and elemental characterization of the elaborated films. The XPS analysis confirm the absence of any peaks related to Ni2+ anion bound to the polymer chain, hence, the absence of any complex formed between Ni (II) and PPy. In addition, the adherence of the films, evaluated by the standard sellotape test, reached 96%. The electrochemical impedance spectroscopy (EIS) and anodic polarization curves showed that the coating exhibits an important anodic protection behavior. |
| Databáze: | OpenAIRE |
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