Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Basiron, Norfatehah; Sreekantan, Srimala; Saharudin, Khairul Arifah; Ahmad, Zainal Arifin; Kumaravel, Vignesh

doi:10.1155/2018/7824827

Cited by 15 publications

(5 citation statements)

References 47 publications

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“…The future work on SBA coatings should be focused on the mechanism of hydrophobicity, water tilt angle, contact angle hysteresis, chemical stability, UV durability, and optical According to the principle of wettability of the surface [12,13], the coating composition on the surface of tiles, which consisted of silica and low surface free energy DMDEOS, could effectively prevent the water penetration. Therefore, the treated floor tiles were highly hydrophobic.…”

Section: Discussionmentioning

confidence: 99%

“…Generally, the surface wettability can be characterized by the water contact angle (WCA). In the last two decades, special wettability with multifunctional surfaces has aroused great interest in fundamental research and industrial applications [7][8][9][10][11][12][13]. A surface with a drop of water below 90 • and above 90 • of WCA is commonly referred to as hydrophilic and hydrophobic surfaces, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Hydrophobic Coatings Using Sugarcane Bagasse Waste Ash as Silica Source

Natarajan¹,

Subramaniyam²,

Kumaravel

2019

Applied Sciences

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Eco-friendly hydrophobic coatings were fabricated on tiles via the drop-casting process. Sugarcane bagasse waste ash (SBA) was used as a silica source and dimethyldiethoxysilane (DMDEOS) was used as a surface functionalizing agent. The elemental composition of SBA was measured using X-ray fluorescence (XRF) and energy-dispersive spectroscopy (EDS) techniques. The surface morphology of SBA was analyzed through the field-emission scanning electron microscopy (FESEM) technique. The surface wettability of SBA coated tiles was evaluated by determining the static water contact angle (WCA). XRF studies showed that the impurities were removed, and the silica content was enriched by the acid treatment. SBA coated tiles showed good hydrophobicity with a WCA of 135°. The high hydrophobicity of the coated tiles may be attributed to the increase of surface roughness by SBA. Moreover, the SBA coating was successfully tested on various substrates such as tiles, brick, glass, and cotton cloth. SBA coated glass substrate was more durable compared to other substrates at normal room temperature.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fabrication of Hydrophobic Coatings Using Sugarcane Bagasse Waste Ash as Silica Source

Natarajan¹,

Subramaniyam²,

Kumaravel

2019

Applied Sciences

Self Cite

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“…Moreover, the spray coating process has not only been used to deposit pristine ZnO thin film, but also metal-doped ZnO which eventually improved the surface smoothness, structure compactness, and electrical conductivity of the thin film [ 166 , 167 ]. Despite the benefits coming from its simple preparation, the spray coating process faces major challenges in facilitating the high yield thin-film production, the battling determination of growth temperature, and the possibility of sulfide oxidation under air atmosphere condition [ 168 ]. Owoeye et al .…”

Section: Zno Coating Process and Technological Feasibilitymentioning

confidence: 99%

ZnO-based antimicrobial coatings for biomedical applications

Puspasari

Ridhova

Hermawan³

et al. 2022

Bioprocess Biosyst Eng

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Rapid transmission of infectious microorganisms such as viruses and bacteria through person-to-person contact has contributed significantly to global health issues. The high survivability of these microorganisms on the material surface enumerates their transmissibility to the susceptible patient. The antimicrobial coating has emerged as one of the most interesting technologies to prevent growth and subsequently kill disease-causing microorganisms. It offers an effective solution a non-invasive, low-cost, easy-in-use, side-effect-free, and environmentally friendly method to prevent nosocomial infection. Among antimicrobial coating, zinc oxide (ZnO) stands as one of the excellent materials owing to zero toxicity, high biocompatibility to human organs, good stability, high abundancy, affordability, and high photocatalytic performance to kill various infectious pathogens. Therefore, this review provides the latest research progress on advanced applications of ZnO nanostructure-based antibacterial coatings for medical devices, biomedical applications, and health care facilities. Finally, future challenges and clinical practices of ZnO-based antibacterial coating are addressed.

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“…5,6 Many methods have been reported in the literature for fabricating artificial SHB surfaces by modifying the surface with nanostructures and low-surface-energy materials. 7 Among these methods, spray coating, 8–11 laser machining, 12–14 solution immersion, 15–18 and chemical etching 19–21 have been primarily used to develop SHB surfaces. However, aforesaid methods are subject to some limitations which include high production cost and low efficiency.…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly and facile fabrication of superhydrophobic aluminum alloy

Ivvala

Mandal

Arora

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Synthetic superhydrophobic surfaces have drawn significant interest owing to their water-resistant and self-cleaning applications. However, most of the fabrication practices involve complex processes that are unsustainable to withstand large-scale fabrication to transform into standard industrial practice. The desired durability of these surfaces is another crucial challenge that makes the translation of these products difficult. In this paper, we reported the fabrication of superhydrophobic aluminum alloy with a simpler, low-cost, and eco-friendly technique using the hydrothermal treatment. Subsequently, the surface energy of the processed substrate was modulated using a chemical vapor deposition technique. The developed surface shows an extreme water repellency with a contact angle above 160° and a very low contact angle hysteresis and rolling angle (<5°). Surface morphological characterizations showed the formation of nanoscale hierarchical structures which resulted in a stable Cassie state due to the effective entrapment of air and exhibiting self-cleaning ability. The developed surface showed extreme wetting resilience during exposure to a droplet impingement with an impinging velocity of >2 m/s. Further, these superhydrophobic surfaces were exposed to atmospheric weather conditions to check their robustness. During a rain simulator testing, a developed surface showed low contact angle hysteresis (<10°) after enduring multiple cycles. The processed surface also showed significant de-wetting behavior during condensation experiments and chemical resistance under prolonged exposure. Weathering tests performed under outdoor conditions showed an insignificant influence on the de-wettability of the processed sample. The present study highlights the fabrication of superhydrophobic durable metallic surfaces through a facile and green fabrication route for multifunctional applications.

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Improved Adhesion of Nonfluorinated ZnO Nanotriangle Superhydrophobic Layer on Glass Surface by Spray-Coating Method

Cited by 15 publications

References 47 publications

Fabrication of Hydrophobic Coatings Using Sugarcane Bagasse Waste Ash as Silica Source

Fabrication of Hydrophobic Coatings Using Sugarcane Bagasse Waste Ash as Silica Source

ZnO-based antimicrobial coatings for biomedical applications

Eco-friendly and facile fabrication of superhydrophobic aluminum alloy

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