Highly transparent and robust superhydrophobic coatings fabricated via a facile sol-gel process

Ke, Chong; Zhang, Chenhua; Wu, Xinguo; Jiang, Yongdong

doi:10.1016/j.tsf.2021.138583

Cited by 49 publications

(19 citation statements)

References 40 publications

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“…Since the organogelators are hydrophobic, the formed gels can be utilized as hydrophobic coating materials for antifouling applications [45] . The modification of gallic acid with three long hydrogen carbon chains as superhydrophobic tails are anticipated to bring about high hydrophobicity, which was verified through the measurements of the WCA.…”

Section: Resultsmentioning

confidence: 92%

Gallic‐Acid‐Modified Naphthalimide Containing Disulfide Bond as Reduction‐Responsive Supramolecular Organogelator

et al. 2022

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The development of low molecular‐weight gelators for the construction of stimuli‐responsive gels is increasing attention because of the great application potential. In this work, we report the design and synthesis of two new naphthalimide derivatives, GSSN and GN, as supramolecular organogelators. GSSN contains a disulfide bond in the molecule, while GN contains no disulfide bond. As a result, only GSSN exhibited reduction responsiveness. A series of tests, including UV‐vis, temperature‐dependent 1H NMR, XRD, and SEM, were carried out to characterize the gelation capability and probe into the gelation mechanism. Results showed that GN can gelate more organic solvents than GSSN. Both hydrogen bonding and π stacking contribute to the gelation. Due to the difference in the assembly of the organogelator molecules, the organogels formed by GSSN and GN presented distinct morphologies. Moreover, strong hydrophobicity was found in the organogel films of GSSN and GN, suggesting potential application as hydrophobic coating materials.

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Section: Resultsmentioning

confidence: 92%

Gallic‐Acid‐Modified Naphthalimide Containing Disulfide Bond as Reduction‐Responsive Supramolecular Organogelator

et al. 2022

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“…The reason for the obvious increase in hydrophobicity is due to fluor silane modification. Specifically, the hydrophilic aluminum alloy surface is covered with a large number of -OH groups, while fluor silane is composed of non-polar hydrophobic long chains and polar end groups [ 29 ]. During the modification process, hydrolyzed silane undergoes a dehydration or condensation reaction with the -OH group, so that the Si-O- bond is connected to the alloy surface, and a layer of covalently bonded three-dimensional network structures is constructed [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

Improving the Corrosion Resistance of Aluminum Alloy by Creating a Superhydrophobic Surface Structure through a Two-Step Process of Etching Followed by Polymer Modification

Tian

Liang

et al. 2022

Polymers

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A multifunctional aviation aluminum alloy with good superhydrophobicity and corrosion resistance was prepared by a two-step process of etching followed by polymer modification. Meanwhile, micro- and nanostructures formed on the processed sample. Compared with bare sample, the static liquid contact angle on the as-prepared sample was increased by 100.8°. Further polarization tests showed that the corrosion potential of such a sample increased, and the corrosion current density decreased obviously, thus suggesting that the corrosion resistance of the modified sample was significantly improved. The same conclusion was confirmed by subsequent impedance testing. The work is of great economic value and practical significance to enhance the corrosion resistance of aviation actuator materials and also lays a foundation for future hydrophobic application research in aeronautical engineering.

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“…SHP surfaces with water contact angles more than 150° and water slide angles less than 10° have acquired extensive attention due to their vast array of potential uses, such as anticorrosion 3 , oil–water separation 4 , self-cleaning 5 , anti-icing 6 , antifouling 7 , biomedicine 8 , and drag reduction 9 . Various methods were utilized to manufacture bio-inspired SHP surfaces, including chemical vapor deposition 10 , chemical etching 11 , 3D printing 12 , sol-gel 13 , electrospinning 14 , anodization 15 , spraying 16 , and electrodeposition 17 . Most of these procedures are intricate and time-consuming, restricting their industrial applications on a large scale.…”

Section: Introductionmentioning

confidence: 99%

Construction of superhydrophobic graphene-based coating on steel substrate and its ultraviolet durability and corrosion resistance properties

Mohamed

Mekhaiel

Mahgoub

2023

Sci Rep

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For the first time, a facile and environmentally friendly approach for producing high-quality graphene from the biomass of banana leaves is described in this paper. Two rough coats of Ni-graphene, Ni@G, and Ni-graphene doped with chromium, Ni@Cr-G, were created on steel substrates by electrostatic deposition. These coatings were then submerged in an ethanolic solution of myristic acid, MA, to produce a superhydrophobic, SHP, surface. The Raman spectra demonstrated that the generated graphene was of high quality. Fourier transform infrared spectroscopy findings confirm the modification of the Ni@G coating by MA, Ni@G@MA, and the modification of the Ni@Cr-G composite with MA, Ni@Cr-G@MA. The results of the scanning electron microscope revealed that the created SHP coatings have nanoscale features. The wettability results showed that the water contact angle values for Ni@G@MA and Ni@Cr-G@MA coatings are 158° and 168°, while the water sliding angle values for both coatings are 4.0 o and 1.0°, respectively. The atomic force microscopy results show that both Ni@G and Ni@Cr-G coatings increase the roughness of the steel. The chemical and mechanical stability of the Ni@Cr-G@MA coating was higher than those of the Ni@G@MA coating. The coated steel by Ni@Cr-G@MA exhibits UV stability up to 110 h, while the SHP-coated steel by Ni@G@MA exhibits UV stability for 60 h. The potentiodynamic polarization results show that the value of the corrosion current density for bare steel is 13 times that of steel coated with Ni@G@MA, and 21 times that of coated steel with Ni@Cr-G@MA. The electrochemical impedance spectroscopy, EIS, results show that the charge transfer resistance for steel coated with Ni@G@MA is 38 times that of bare steel, while steel coated with Ni@Cr-G@MA is 57 times that of bare steel. Potentiodynamic polarization and EIS results show that the SHP Ni@Cr-G@MA film exhibits higher corrosion resistance than Ni@G@MA film.

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Highly transparent and robust superhydrophobic coatings fabricated via a facile sol-gel process

Cited by 49 publications

References 40 publications

Gallic‐Acid‐Modified Naphthalimide Containing Disulfide Bond as Reduction‐Responsive Supramolecular Organogelator

Gallic‐Acid‐Modified Naphthalimide Containing Disulfide Bond as Reduction‐Responsive Supramolecular Organogelator

Improving the Corrosion Resistance of Aluminum Alloy by Creating a Superhydrophobic Surface Structure through a Two-Step Process of Etching Followed by Polymer Modification

Construction of superhydrophobic graphene-based coating on steel substrate and its ultraviolet durability and corrosion resistance properties

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