A facile process for fabrication of environmentally safe superhydrophobic surfaces

Mittal, Tanu; Tiwari, Sangeeta

doi:10.1007/s11998-017-9927-4

Cited by 4 publications

(3 citation statements)

References 38 publications

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“…Average water contact angles > 150 were achieved in all cases but unfortunately substrate etching substantially reduced the versatility of said methods. [26][27][28] To improve on many existing approaches, extreme wetting regimes should be afforded aer one treatment of any substrate using non-uorinated economically viable coating precursors.…”

Section: Introductionmentioning

confidence: 99%

Inexpensive and non-toxic water repellent coatings comprising SiO₂ nanoparticles and long chain fatty acids

et al. 2018

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Special wettability durable coatings, with average water contact angles exceeding 140 , have been fabricated utilising functionalised hydrophobic-SiO 2 (H-SiO 2 ) particles embedded in fatty acids. The inexpensive and non-toxic H-SiO 2 particles imparted delicate lotus leaf inspired hierarchical surface nano-morphologies while the fatty acid modification afforded a suitable drop in surface energy.Comparison studies were carried out to explore the effects of fatty acid chain length and pipette as opposed to spray coating deposition methods on the coatings hydrophobicity. It was determined that the longest chain length fatty acid coatings showed enhanced hydrophobic properties due to their extended hydrophobic alkyl chain. A pipette deposited suspension containing H-SiO 2 nanoparticles and octadecanoic acid generated a coating with the most favourable average water contact and tilting angles of 142 AE 6 and 16 AE 2 respectively.

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Section: Introductionmentioning

confidence: 99%

Inexpensive and non-toxic water repellent coatings comprising SiO₂ nanoparticles and long chain fatty acids

et al. 2018

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“…They degrade into toxic and ecologically persistent molecules, such as perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS). Most literature on environmentally friendly STFs focused on inorganic-organic hybrid 185,219,[232][233][234][235][236][237][238] and organic 239 materials. The employed dip-coating process involved combining different surface texture fabrication strategies 174 and less environmentally damaging chemical materials.…”

Section: Eco-friendly Superhydrophobicitymentioning

confidence: 99%

Super‐liquid‐repellent thin film materials for low temperature latent heat thermal energy storage: A comprehensive review of materials for dip‐coating

Muhumuza,

Eames

2024

Energy Storage

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When discharging latent heat thermal energy storage (LHTES) systems, performance is influenced by the formation and adherence of a solid layer of phase change material (PCM) on heat eXchange (HX) surfaces. Super‐liquid‐repellent thin films (STFs) may be able to reduce solidifying PCM adhesion on HX surfaces during discharging, delay PCM solidification to lower temperatures, and by modifying nucleation sites potentially enable long‐term seasonal thermal storage. Techniques employed previously to fabricate sintered polymeric STF coatings include chemical vapour deposition, dip‐coating, spray‐coating, spin‐coating, layer‐by‐layer (LbL) assembly, sol‐gel, anodizing, electrodeposition, electrospinning, so on. Dip‐coating is considered attractive for fabricating thin films on simple and complex surface geometries due to process maturity, scalability, flexibility and cost‐effectiveness. To identify suitable materials for preparing STFs on metal HX surfaces using the dip‐coating process, more than 200 journal articles published in English during the period 2010 to 2022 were reviewed and the potential role of STFs in LHTES applications was assessed. The review identified key areas and applications stimulating STF material developments and formulations. The dip‐coating of potential STF materials was classified under three major themes driving current research and development (R&D) activities, that is, high performance thin films, eco‐friendly thin films and fundamental research formulations. This review provides a platform from which to develop coatings and HX systems to enable the cost‐effective implementation of STFs for improved heat transfer in future mobile/stationery LHTES systems.

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“…Among various reported techniques, the dipping method is considered a good choice due to its simple performance, convenience in extensive fabrication, and its not needing expensive equipment [16]. Non-metallic coatings are often used for metal protection due to their advantages.…”

Section: Introductionmentioning

confidence: 99%

Anti-corrosive superhydrophobic coatings fabricated by a simple dipping method

Zhang

Yang

Zhou

2021

Surface Engineering

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The two-step dipping technique was used to fabricate anti-corrosive fluorocarbon paint (FP)/ SiO 2 superhydrophobic coatings on the surfaces of aluminium alloy substrates. In order to characterise the surface microtopography, chemical element and groups, hydrophobicity, and corrosion performance of these prepared coatings, we employed a scanning electron microscope (SEM) and X-ray photoelectron spectrometer (XPS) as well as performing electrochemical experiments. Coating adhesion was reflected by the scotch-tape test. The coatings had a micron-nanometre hierarchical structure, and their surface morphologies were strongly dependent on the silica nanoparticle concentration. The superhydrophobicity of the coating was correlated with its microstructure and composition. The electrochemical experiments revealed that the obtained coating could enhance the corrosion performance of the underlying Al alloy substrates.

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A facile process for fabrication of environmentally safe superhydrophobic surfaces

Cited by 4 publications

References 38 publications

Inexpensive and non-toxic water repellent coatings comprising SiO₂ nanoparticles and long chain fatty acids

Inexpensive and non-toxic water repellent coatings comprising SiO₂ nanoparticles and long chain fatty acids

Super‐liquid‐repellent thin film materials for low temperature latent heat thermal energy storage: A comprehensive review of materials for dip‐coating

Anti-corrosive superhydrophobic coatings fabricated by a simple dipping method

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A facile process for fabrication of environmentally safe superhydrophobic surfaces

Cited by 4 publications

References 38 publications

Inexpensive and non-toxic water repellent coatings comprising SiO2 nanoparticles and long chain fatty acids

Inexpensive and non-toxic water repellent coatings comprising SiO2 nanoparticles and long chain fatty acids

Super‐liquid‐repellent thin film materials for low temperature latent heat thermal energy storage: A comprehensive review of materials for dip‐coating

Anti-corrosive superhydrophobic coatings fabricated by a simple dipping method

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Product

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Inexpensive and non-toxic water repellent coatings comprising SiO₂ nanoparticles and long chain fatty acids

Inexpensive and non-toxic water repellent coatings comprising SiO₂ nanoparticles and long chain fatty acids