Synthesis and application of mesoporous carbon nanospheres containing walnut extract for fabrication of active protective epoxy coatings
| Autor: | Seyyed Arash Haddadi, S A Ahmad Ramazani, Taha Behroozi Kohlan, Sina Momeni, Mohammad Mahdavian |
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| Rok vydání: | 2019 |
| Předmět: |
Thermogravimetric analysis
Materials science General Chemical Engineering Organic Chemistry Doping 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Nanocapsules 0104 chemical sciences Surfaces Coatings and Films Corrosion Dielectric spectroscopy Field emission microscopy Chemical engineering visual_art Materials Chemistry visual_art.visual_art_medium Fourier transform infrared spectroscopy 0210 nano-technology |
| Zdroj: | Progress in Organic Coatings. 133:206-219 |
| ISSN: | 0300-9440 |
| DOI: | 10.1016/j.porgcoat.2019.04.046 |
| Popis: | In this article, the synthesis procedure of mesoporous carbon nanospheres (MCNSs) using silica hard-templates, doping of the nanospheres with walnut extract, and their impact on active protective properties of an epoxy coating are presented. Field emission scanning electron microscope (FE-SEM) results showed that the synthesis of these nanocontainers was successfully done in spherical form. Thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FT-IR) results showed that walnut extract as a green inhibitor was doped into the pores of nanocapsules. Corrosion resistance of the mild steel samples in the 3.5 wt.% NaCl solution in the presence and absence of walnut extract was compared. Salt spray and electrochemical impedance spectroscopy (EIS) results proved active protective behavior of the epoxy coating containing the doped MCNSs. It was shown that charge transfer resistance of the bare steel sample enhanced from ˜610 Ω cm2 to ˜4060 Ω cm2 in the presence of WE after 24 h immersion time. Also, the active corrosion protective performance of the scribed coatings was improved ˜1450% in the presence of WE@MCNSs. |
| Databáze: | OpenAIRE |
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