Self-cleaning and anti-fouling superhydrophobic hierarchical ceramic surface synthesized from hydrothermal and fluorination methods
In this work, we develop superhydrophobic ceramic surfaces possessing flower-like hierarchical structures that can resist surface wetting against not only water but also ethylene glycol and palm oil. This can benefit a wide range of potential applications in many ceramic fields. The synergistic stra...
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Main Authors: | , , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
Elsevier B.V.
2022
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Subjects: | |
Online Access: | http://eprints.utm.my/id/eprint/100989/1/MohdHafizDzarfan2022_SelfCleaningandAntiFoulingSuperhydrophobic.pdf http://eprints.utm.my/id/eprint/100989/ http://dx.doi.org/10.1016/j.apsusc.2022.153702 |
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Summary: | In this work, we develop superhydrophobic ceramic surfaces possessing flower-like hierarchical structures that can resist surface wetting against not only water but also ethylene glycol and palm oil. This can benefit a wide range of potential applications in many ceramic fields. The synergistic strategy to fabricate superhydrophobic ceramic surfaces relies on the construction of hierarchical structures through pre-roughening. Using TiO2 microflowers obtained via a hydrothermal approach and post-fluorinating via surface grafting with 1H,1H,2H,2H-perfluorodecyltriethoxysilane (C8) resulted in better metastable Cassie-Baxter state as water droplet roll-off the surface compared to non-textured ceramic surfaces where the water droplet pinned. The C8-TiO2-modified ceramic surface (C8/TiO2-CRM) can still maintain a high contact angle against palm oil (above nearly 120°) within 40 min of exposure, whereas the un-textured ceramic surface is fully wetted. In addition, the C8/TiO2-CRM has excellent self-cleaning, anti-fouling and “gasphilic” properties. In this work, the robustness of the composite interface from hierarchical structures resulting from TiO2 micro-flowers is further explained. |
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