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2020-03-26

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cc by (c) Rius Ayra, Oriol et al., 2020
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/171591

Non-fluorinated, sustainable, and durable superhydrophobic microarrayed surface for water-harvesting

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https://doi.org/10.3390/coatings10040314

Abstract

Water scarcity is a worldwide issue that significantly affects the environment, population, and economy of the arid zones. In this study, we report a straightforward method for water-harvesting based on modifications of the surface wettability. Using magnesium chloride, lauric acid, and electrodeposition process, a superhydrophobic surface (155°) is obtained. Morphological characterization techniques allow determination of the characteristic flower-like microstructures combined with close packed nanoarrays that lead to the hierarchical structure. Furthermore, the coating presents vertically aligned microarrays in a non-linear cone morphology formed by dynamic templating of hydrogen bubbles. From a chemical point of view, magnesium laurate is responsible for the surface tension decrease. To determine the durability of the obtained surface ultra-violet (UV) light test and abrasive paper test, tests are carried out revealing high durability against these severe conditions. The water-harvesting ability of the superhydrophobic surface is studied at 45° and 90° tilted samples. The capacity of the water to be harvested efficiently is found to be at 90° tilt under fog conditions. The use of green reactants associated with this hierarchical structure broadens a new scope for sustainable freshwater collection and it becomes an excellent example of a green solution.

Subject

Superfícies hidrofòbiques, Galvanoplàstia, Conservació de l'aigua, Durabilitat (Enginyeria), Desenvolupament sostenible

Subject (English)

Hydrophobic surfaces, Electroplating, Water conservation, Service life (Engineering), Sustainable development

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Articles publicats en revistes (Ciència dels Materials i Química Física)

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RIUS AYRA, Oriol, FIESTAS PARADELA, Sheil and LLORCA I ISERN, Núria. Non-fluorinated, sustainable, and durable superhydrophobic microarrayed surface for water-harvesting. Coatings. 2020. Vol. 10, num. 4, pags. 314. ISSN 1944-8244. [consulted: 12 of June of 2026]. Available at: https://hdl.handle.net/2445/171591

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