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Superhydrophobic Silicone/TiO2–SiO2 Nanorod-like Composites for Marine Fouling Release Coatings

Résumé : For the first time, a superhydrophobic series of silicone/nanorod-like TiO2–SiO2 core–shell composites was fabricated by solution casting for marine fouling release (FR) coatings. Hydrothermal technique was used to prepare single crystal TiO2 nanorods as a core structure in the diameter regime of 20 nm and preferentially grown in 101 direction. Hybrid nanorod-like TiO2–SiO2 core–shell nanofillers were synthesized by sol–gel technique with silica shell thickness of 2–5 nm. The structure-property relationship was investigated by dispersing various nanofiller concentrations in the silicone matrix. Surface non-wettability properties were investigated using water contact angle (WCA), surface free energy (SFE), and atomic force microscopy. Coating′s photocatalytic degradation of organic pollutants and microorganisms was also investigated. Selected micro- and macro-fouling strains were used for antifouling assessments in laboratory. The fabricated models were subjected to a rigorous field trial in natural seawater for 6 months in a tropical area. Well-distributed nanorod-like TiO2–SiO2 core–shell (0.5 wt.%) exhibited the preferable FR self-cleaning with WCA of 154° and SFE of 10.45 mN/m.
Domaine de référence : Antifouling
Auteur Selim Mohamed S., El‐Safty Sherif A., Azzam Ahmed M., Shenashen Mohamed A., El‐Sockary Maher A., Abo Elenien Ossama M.
Année de parution : 2019.
Mots-clés : core–shell, fouling release, fouling strains, nanocomposite, self-cleaning, Superhydrophobic.
Type de document : Article de revue.
Exporter la référence : BibTeX | Zotero RDF | RIS (EndNote)

Ce projet est financé par le Fonds Européen de Développement Régional, la Région Normandie et le Conseil Départemental de la Manche.