A Review: Natural Superhydrophobic Surfaces and Applications

Jin, Mengru; Xing, Qianli; Chen, Zikang

doi:10.4236/jbnb.2020.112008

Cited by 17 publications

(8 citation statements)

References 37 publications

(59 reference statements)

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“…Superhydrophobic surfaces with water contact angles (CA) > 150° have increased attention due to their numerous potential applications such as anti-icing, self-cleaning, oil–water separation, and anticorrosion [ 22 , 23 , 24 ]. Reduced graphene oxide (rGO) is a suitable candidate as superhydrophobic material, due to its hydrophobicity in nature, its large specific surface area, abrasion resistance, and excellent conductivity.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic Ni-Reduced Graphene Oxide Hybrid Coatings with Quasi-Periodic Spike Structures

et al. 2022

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Recently, sophisticated technologies are applied to design a certain surface nature that can have superhydrophobic properties. Thus, a simple spray technique was introduced to prepare a superhydrophobic surface using rGO with Ni-S system (rGO-Ni) by using NiSO4 catalyst under microwave irradiation at various reaction times of 5, 10, 20, and 30 min. The GO reduction was conducted at a fixed Ar/H2 ratio, a flow rate of 0.4 L/min, microwave power of 720 W, and a mass of 0.5 g. GO powder with nickel sulfate catalyst was treated under Ar/H2 (4:1) mixture for GO reduction, where Ar and H2 were expected to prevent the rebinding of oxygen released from GO. The result of XRD and Raman measurement confirms that rGO-Ni prepared at reaction time 20 min exhibit the highest reduction of GO and the presence of various Ni-S crystal structures such as NiS, NiS2, Ni3S2, and Ni3S4 due to decomposition of NiSO4. The rGO-Ni coating performance shows superhydrophobic nature with a contact angle of 150.1°. The AFM images show that the addition of nickel to rGO produces a quasi-periodic spike structure, which increases the superhydrophobicity of the r-GO-Ni coated glass with a contact angle of 152.6°. It is emphasized that the proposed simple spray coating using rGO-Ni provides a more favorable option for industry application in obtaining superhydrophobic surfaces.

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Section: Introductionmentioning

confidence: 99%

Superhydrophobic Ni-Reduced Graphene Oxide Hybrid Coatings with Quasi-Periodic Spike Structures

et al. 2022

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“…Therefore, self-cleaning is an important and interesting property in transportation sector. 7 Hydrophobic fabrics have also self-cleaning properties which can be used in upholstery, usual cloths, mattresses, and also in sport cloths. 8 As per the statistics released in 2018 by the International Air Transport Association (IATA) the estimate air passenger numbers could hit 8.2 billion per year by 2037.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The two main requirements to create an excellent super hydrophobic surface are surface roughness and low surface energy. 7 Several technologies such as E-beam lithographic, etching, stretching, spin coating, plasma deposition can be used to develop hydrophobic surfaces. 7 In addition, electrospinning can also be used to manufacture nanofibers with coatings from a charged solution.…”

Section: Introductionmentioning

confidence: 99%

“…7 Several technologies such as E-beam lithographic, etching, stretching, spin coating, plasma deposition can be used to develop hydrophobic surfaces. 7 In addition, electrospinning can also be used to manufacture nanofibers with coatings from a charged solution. 14,15 Furthermore, 16 nanotechnologies also can be used to produce super hydrophobic or hydrophobic surfaces.…”

Section: Introductionmentioning

confidence: 99%

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Surface treated cotton fabric with stain repellent property for the use in aircraft upholstery

Kuruppu

2021

Journal of Engineered Fibers and Fabrics

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Nanotechnology modifications play a major role in textile industry due to extraordinary properties exhibit in fabrics due to nanomaterials. It offers different functionalities namely self-cleaning, wrinkle resistance, flame retardancy, protection from UV radiations or antibacterial property. Further, it is important to maintain cleanliness in aircraft upholstery always but the airliners have to bear a considerable amount of money to clean up the aircraft upholstery. Interestingly, nanotechnology can provide stain repellence property for fabrics in aircraft upholstery. This study covers a method of developing a stain repellent fabric which was stable even after 25 standard laundering conditions. In this study nanotechnology was used to modify a cotton fabric with stain repellant property. After nanotechnology modification, the surface wettability of the treated fabrics was characterized by static water contact angle measurements before and after 25 washes carried out under standard laundering conditions. Similar testings were carried out for the untreated fabric samples. The static water contact angle for the treated fabric was 161° with the recovery of 97.5% after 25 washing cycles. SEM and AFM micrographs were used to analyze the coatings. Further, the stability of hydrophobicity in the modified cotton fabric after 25 washes was also tested for tea, coffee, and water solutions which are vulnerable stain types in aircraft upholstery. It clearly proved that the modified cotton fabric even after 25 washes showed hydrophobicity for tea, coffee, and water. Therefore, it could be concluded that the developed modified cotton fabric can consider to be used as an aircraft upholstery.

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Anisotropic Superhydrophobic Properties Replicated from Leek Leaves

Mirmohammadi,

Shirazi,

Heikkilä

et al. 2024

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A bio‐inspired approach to fabricate robust superhydrophobic (SHB) surfaces with anisotropic properties replicated from a leek leaf is presented. The polydimethylsiloxane (PDMS) replica surfaces exhibit anisotropic wetting, anti‐icing, and light scattering properties due to microgrooves replicated from leek leaves. Superhydrophobicity is achieved by a novel modified candle soot (CS) coating that mimics leek's epicuticular wax. The resulting surfaces show a contact angle (CA) difference of ≈30° in the directions perpendicular and parallel to the grooves, which is similar to the anisotropic properties of the original leek leaf. The coated replica is durable, withstanding cyclic bending tests (up to 10 000 cycles) and mechanical sand abrasion (up to 60 g of sand). The coated replica shows low ice adhesion (10 kPa) after the first cycle; and then, increases to ≈70 kPa after ten icing–shearing cycles; while, anisotropy in ice adhesion becomes more evident with more cycles. In addition, the candle soot‐coated positive replica (CS‐coated PR) demonstrates a transmittance of ≈73% and a haze of ≈65% at the wavelength of 550 nm. The results show that the properties depend on the replicated surface features of the leek leaf, which means that the leek leaf appears to be a highly useful template for bioinspired surfaces.

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A Review: Natural Superhydrophobic Surfaces and Applications

Cited by 17 publications

References 37 publications

Superhydrophobic Ni-Reduced Graphene Oxide Hybrid Coatings with Quasi-Periodic Spike Structures

Superhydrophobic Ni-Reduced Graphene Oxide Hybrid Coatings with Quasi-Periodic Spike Structures

Surface treated cotton fabric with stain repellent property for the use in aircraft upholstery

Anisotropic Superhydrophobic Properties Replicated from Leek Leaves

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