Silicone/graphene oxide sheet-alumina nanorod ternary composite for superhydrophobic antifouling coating

Selim, Mohamed S.; El‐Safty, Sherif A.; Fatthallah, Nesreen A.; Shenashen, Mohamed A.

doi:10.1016/j.porgcoat.2018.04.021

Cited by 149 publications

(53 citation statements)

References 71 publications

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“…Controlling the size and morphology of nanomaterials can improve the performance of nanocomposite [68][69][70] . The Prevention of fouling attachments and reduction of fouling-coating adhesion strength are the mechanisms employed by FR self-cleaning surfaces [32,71,72] (Figure 6). Non-toxic FR nanocomposite is a new trend toward robust eco-friendly self-cleaning coatings for vessel bottoms and the shipping industry.…”

Section: Self-cleaning Nanocomposites For Fouling Release Coatingsmentioning

confidence: 99%

Superhydrophobic Self-cleaning Surfaces in Nature

Mohammed S.

2020

NAT

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A global interest was awarded to study the natural superhydrophobic surfaces since the description of the Lotus Effect by Barthlott and Neinhuis in 1997. Natural biomimetic surface merits of micro/nano-roughness, water contact ˃ 150°, sliding angles ˂10°, and minimized free-energy characteristics would motivate the dynamic fabrication of superhydrophobic surfaces. This critical review introduces an architectural panorama of numerous structural designs of natural superhydrophobic surfaces. Also, it discussed the fundamentals of self-cleaning and wetting theories to develop superhydrophobic structures. This progress review concentrates on superhydrophobic materials' applications for self-cleaning marine antifouling surfaces. It introduced an in-depth understanding of the structural design-superhydrophobic property relationship of the natural nano-wettable surfaces. It is technically first to shed light on the inner basics and platform for surface non-wettability and facilitates the way for design biomimetic self-cleaning antifouling surfaces.

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Section: Self-cleaning Nanocomposites For Fouling Release Coatingsmentioning

confidence: 99%

Superhydrophobic Self-cleaning Surfaces in Nature

Mohammed S.

2020

NAT

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“…Superhydrophobic surfaces can be produced via two strategies: (1) designing ultra-smooth surfaces; and (2) modifying rough surfaces, both based on low-surface-energy materials. [2,3,[3][4][5]5,6] Superhydrophilic surfaces can be referred to those textured and/or structured materials having a surface roughness factor (as defined in the Wenzel equation) greater than one, r > 1, on which water spreads completely and then form water across layer i. e. water would lie on such a surface as a flat film rather than in form of droplets, and hence the dirt, dust and other staining materials on the surface can be readily washed away with this super-spreading water layer. [7] The wettability of such surface is dependent on its surface free energy and surface geometrical structure.…”

Section: Introductionmentioning

confidence: 99%

Transparent and Self‐Cleaning Surfaces Based on Nanocomposite Sol‐Gel Coatings

et al. 2020

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In this study, transparent anti‐fogging and self‐cleaning nanocomposite coatings based on sponge‐like TiO2−SiO2 nanoparticles on glass substrate were prepared through the sol‐gel process, by using spin‐coating and spray gun techniques to coat small and large glass surfaces. The effect of annealing temperature on the morphology, wettability, UV–Vis transmittance, refractive index, thickness, photocatalytic degradation rate and the anti‐fouling effect was studied in detail. Indeed, the self‐cleaning properties of the nanocomposite coatings were evaluated as efficient by both photocatalytic degradation of orange G (OG) dye under natural sunlight irradiation and water contact angle (WCA) method under atmospheric out‐door conditions. It should be noted that the optical transmission of nanocomposite coatings remains important (85–87 %) compared to the ordinary glass (92 %) with lower haze value, which confirms their clear optical appearance. The nanocomposite coatings rendered the glass substrate hydrophilic with a WCA value that not exceeding 12° after fifteen weeks of out‐door exposure. Photocatalytic degradation rate relative to OG up to 7.9 % were achieved for the nanocomposite coating annealed at 500 °C after 8 hours of sunlight exposition. The soil attachment test reveal that nanocomposite coatings prevent the accumulation of soil particles and has an excellent anti‐fouling and anti‐fogging properties. These findings indicated that the TiO2‐SiO2 nanocomposite coatings could be a very attractive solution for many practical areas (environment, energy and building sectors) especially for outdoor applications.

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“…In recent years, inspired from the unique water-repellent property of natural organisms [5,6,7,8,9], the artificial fabrication of bionic superhydrophobic surfaces attracted intensive attention of scientists and engineers owing to their multi-functional applications, such as self-cleaning [10,11], oil–water separation [12,13], drag reduction [14,15], anti-icing/frosting [16,17], microdroplet transportation [18,19], water collection [20,21], marine anti-corrosion [22,23], anti-biofoulings [24,25], etc. It is believed and demonstrated that superhydrophobic surfaces could effectively reduce the solid/liquid interfacial contacts and provide a functional corrosion-resistant barrier.…”

Section: Introductionmentioning

confidence: 99%

Lotus-Inspired Multiscale Superhydrophobic AA5083 Resisting Surface Contamination and Marine Corrosion Attack

Zhang

Zhu

et al. 2019

Materials

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The massive and long-term service of 5083 aluminum alloy (AA5083) is restricted by several shortcomings in marine and industrial environments, such as proneness to localized corrosion attack, surface contamination, etc. Herein, we report a facile and cost-effective strategy to transform intrinsic hydrophilicity into water-repellent superhydrophobicity, combining fluorine-free chemisorption of a hydrophobic agent with etching texture. Dual-scale hierarchical structure, surface height relief and surface chemical elements were studied by field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS), successively. Detailed investigations of the wetting property, self-cleaning effect, NaCl-particle self-propelling, corrosion and long-term behavior of the consequent superhydrophobic AA5083 surface were carried out, demonstrating extremely low adhesivity and outstanding water-repellent, self-cleaning and corrosion-resisting performance with long-term stability. We believe that the low cost, scalable and fluorine-free transforming of metallic surface wettability into waterproof superhydrophobicity is a possible strategy towards anti-contamination and marine anti-corrosion.

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Silicone/graphene oxide sheet-alumina nanorod ternary composite for superhydrophobic antifouling coating

Cited by 149 publications

References 71 publications

Superhydrophobic Self-cleaning Surfaces in Nature

Superhydrophobic Self-cleaning Surfaces in Nature

Transparent and Self‐Cleaning Surfaces Based on Nanocomposite Sol‐Gel Coatings

Lotus-Inspired Multiscale Superhydrophobic AA5083 Resisting Surface Contamination and Marine Corrosion Attack

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