Wettability transition of metallic surfaces from laser-generated superhydrophilicity to water-induced superhydrophobicity via a facile and eco-friendly strategy
Superhydrophobic metallic surfaces exhibit superior self-cleaning and anti-corrosion properties, but facile and pollution-free preparation of such surfaces remains a challenge. Herein, we propose an eco-friendly strategy by using ns-laser treatment followed by simple hygrothermal treatment (95%RH @...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523001065 |
| _version_ | 1811158444716064768 |
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| author | Hailang Wan Shuangshuang Li Junjian Li Tao Liu Jianping Lin Junying Min |
| author_facet | Hailang Wan Shuangshuang Li Junjian Li Tao Liu Jianping Lin Junying Min |
| author_sort | Hailang Wan |
| collection | DOAJ |
| description | Superhydrophobic metallic surfaces exhibit superior self-cleaning and anti-corrosion properties, but facile and pollution-free preparation of such surfaces remains a challenge. Herein, we propose an eco-friendly strategy by using ns-laser treatment followed by simple hygrothermal treatment (95%RH @ 80 °C), and this strategy is applicable to facilely preparing superhydrophobicity for various metals. Immediately after ns-laser treatment, ultra-porous nano-fibers composed of amorphous Al-Al2O3 mixture were produced, and rendered aluminum surface superhydrophilic via local capillary forces. Counterintuitively, subsequent hydrothermal treatment accelerated wettability transition to superhydrophobicity, and comparative analysis and theoretical modelling strongly suggest that the mechanism of accelerated transition is deeply dominated by nanostructure transformation. A roughened but compact surface layer of spherical AlOOH nanocrystals was reconstructed to enable water droplet in Wenzel wetting state. Our results shed new insights into the origin of wettability evolution commonly reported at various processing/service stages, and demonstrate a novel method to construct superhydrophobic metallic surfaces. |
| first_indexed | 2024-04-10T05:24:47Z |
| format | Article |
| id | doaj.art-6fd753204c3d4433890fa259bd19be97 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-10T05:24:47Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-6fd753204c3d4433890fa259bd19be972023-03-08T04:13:53ZengElsevierMaterials & Design0264-12752023-02-01226111691Wettability transition of metallic surfaces from laser-generated superhydrophilicity to water-induced superhydrophobicity via a facile and eco-friendly strategyHailang Wan0Shuangshuang Li1Junjian Li2Tao Liu3Jianping Lin4Junying Min5School of Mechanical Engineering, Tongji University, Shanghai 201804, ChinaSchool of Mechanical Engineering, Tongji University, Shanghai 201804, ChinaSchool of Chemical Science and Engineering, Tongji University, Shanghai 201804, ChinaSchool of Chemical Science and Engineering, Tongji University, Shanghai 201804, China; Corresponding authors.School of Mechanical Engineering, Tongji University, Shanghai 201804, China; Shanghai Key Laboratory for A & D of Metallic Functional Material, Tongji University, Shanghai 200092, ChinaSchool of Mechanical Engineering, Tongji University, Shanghai 201804, China; Shanghai Key Laboratory for A & D of Metallic Functional Material, Tongji University, Shanghai 200092, China; Corresponding authors.Superhydrophobic metallic surfaces exhibit superior self-cleaning and anti-corrosion properties, but facile and pollution-free preparation of such surfaces remains a challenge. Herein, we propose an eco-friendly strategy by using ns-laser treatment followed by simple hygrothermal treatment (95%RH @ 80 °C), and this strategy is applicable to facilely preparing superhydrophobicity for various metals. Immediately after ns-laser treatment, ultra-porous nano-fibers composed of amorphous Al-Al2O3 mixture were produced, and rendered aluminum surface superhydrophilic via local capillary forces. Counterintuitively, subsequent hydrothermal treatment accelerated wettability transition to superhydrophobicity, and comparative analysis and theoretical modelling strongly suggest that the mechanism of accelerated transition is deeply dominated by nanostructure transformation. A roughened but compact surface layer of spherical AlOOH nanocrystals was reconstructed to enable water droplet in Wenzel wetting state. Our results shed new insights into the origin of wettability evolution commonly reported at various processing/service stages, and demonstrate a novel method to construct superhydrophobic metallic surfaces.http://www.sciencedirect.com/science/article/pii/S0264127523001065Wettability transitionSuperhydrophobic metallic surfaceLaser treatmentHygrothermal treatmentNanostructure transformation |
| spellingShingle | Hailang Wan Shuangshuang Li Junjian Li Tao Liu Jianping Lin Junying Min Wettability transition of metallic surfaces from laser-generated superhydrophilicity to water-induced superhydrophobicity via a facile and eco-friendly strategy Materials & Design Wettability transition Superhydrophobic metallic surface Laser treatment Hygrothermal treatment Nanostructure transformation |
| title | Wettability transition of metallic surfaces from laser-generated superhydrophilicity to water-induced superhydrophobicity via a facile and eco-friendly strategy |
| title_full | Wettability transition of metallic surfaces from laser-generated superhydrophilicity to water-induced superhydrophobicity via a facile and eco-friendly strategy |
| title_fullStr | Wettability transition of metallic surfaces from laser-generated superhydrophilicity to water-induced superhydrophobicity via a facile and eco-friendly strategy |
| title_full_unstemmed | Wettability transition of metallic surfaces from laser-generated superhydrophilicity to water-induced superhydrophobicity via a facile and eco-friendly strategy |
| title_short | Wettability transition of metallic surfaces from laser-generated superhydrophilicity to water-induced superhydrophobicity via a facile and eco-friendly strategy |
| title_sort | wettability transition of metallic surfaces from laser generated superhydrophilicity to water induced superhydrophobicity via a facile and eco friendly strategy |
| topic | Wettability transition Superhydrophobic metallic surface Laser treatment Hygrothermal treatment Nanostructure transformation |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523001065 |
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