Superhydrophobic Silicone/TiO 2 –SiO 2 Nanorod-like Composites for Marine Fouling Release Coatings

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Selim M.S.; El-Safty S.A.; Azzam A.M.; Shenashen M.A.; El-Sockary M.A.; Abo Elenien O.M.

Journal: ChemistrySelect

Publisher: Wiley-Blackwell

Publication Date: 26 March 2019

Volume / Issue: Volume 4 / Issue 12

Pages: 3395–3407

ISSN: 23656549

DOI: 10.1002/slct.201803314

Scopus: View on Scopus

Document Type: Article

Authors and Affiliations

Selim M.S., National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1–2-1 Sengen, Tsukuba-shi, 305-0047, Ibaraki-ken, Japan, Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, 11727, Israel; El-Safty S.A., National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1–2-1 Sengen, Tsukuba-shi, 305-0047, Ibaraki-ken, Japan, Faculty of Engineering and Advanced Manufacturing, University of Sunderland, St Peter's Campus, Sunderland, United Kingdom; Azzam A.M., National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1–2-1 Sengen, Tsukuba-shi, 305-0047, Ibaraki-ken, Japan, Environmental Researches Department, Theodor Bilharz Research Institute (TBRI), Giza, 12411, Egypt; Shenashen M.A., National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1–2-1 Sengen, Tsukuba-shi, 305-0047, Ibaraki-ken, Japan, Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, 11727, Israel; El-Sockary M.A., Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, 11727, Israel; Abo Elenien O.M., Petroleum Application Department, Egyptian Petroleum Research Institute (EPRI), Nasr City, 11727, Israel

Abstract

For the first time, a superhydrophobic series of silicone/nanorod-like TiO 2 –SiO 2 core–shell composites was fabricated by solution casting for marine fouling release (FR) coatings. Hydrothermal technique was used to prepare single crystal TiO 2 nanorods as a core structure in the diameter regime of 20 nm and preferentially grown in {101} direction. Hybrid nanorod-like TiO 2 –SiO 2 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 TiO 2 –SiO 2 core–shell (0.5 wt.%) exhibited the preferable FR self-cleaning with WCA of 154° and SFE of 10.45 mN/m. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

core–shell; fouling release; fouling strains; nanocomposite; self-cleaning; Superhydrophobic

Citation Information

Scopus Citations: 70

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