超疏水锌镍薄膜的氢气泡模板电沉积,New Journal of Chemistry

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超疏水锌镍薄膜的氢气泡模板电沉积
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2022-12-01 , DOI: 10.1039/d2nj05478g
Zhihua Wang _{1,

2} , Yanchao Li ₃ , Guojun Zhang ₁

Affiliation

当水滴接触不干净的超疏水表面时，它们会在表面上滚动，带走灰尘。在此，使用动态氢气泡作为模板制造了自清洁超疏水 Zn-Ni 薄膜。研究了浴温对表面形貌、相结构和润湿性的影响。结果表明，在 Zn-Ni 薄膜沉积过程中，锌优先于镍形成，因为 Zn _ads⁺促进了锌离子的还原，属于反常共沉积。随着镀液温度的升高，薄膜上的气泡覆盖率增加，薄膜的水接触角先增大后减小。当浴温高达 40 °C 时，SEM 观察显示微孔在表面均匀分布，粗糙的菜花状簇状表面形态有利于超疏水性。因此，获得了水接触角高达 152 ± 0.9° 的无改性剂超疏水 Zn-Ni 薄膜。所制备的超疏水 Zn-Ni 薄膜表现出腹甲效应、抗水射流冲击稳定性、优异的自清洁性能和防腐性能。

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Hydrogen bubble-templated electrodeposition of superhydrophobic Zn–Ni films

When water droplets contact an unclean superhydrophobic surface, they roll on the surface taking away the dust. Herein, self-cleaning superhydrophobic Zn–Ni films were fabricated using a dynamic hydrogen bubble as the template. The influence of bath temperature on the surface topography, phase structures, and wettability was investigated. It turned out that, in the process of Zn–Ni films deposition, zinc was formed preferentially than nickel because Zn_ads⁺ promoted the reduction of zinc ions, which belonged to anomalous co-deposition. With an increase of the plating solution temperature, the bubble coverage on the films increased, and the water contact angles of the films increased first and then reduced. When the bath temperature was up to 40 °C, SEM observations revealed an even distribution of micropores on the surface and a rough, cauliflower-like cluster surface morphology, which facilitates superhydrophobicity. Thus, modifier-free superhydrophobic Zn–Ni films with a contact angle for water up to 152 ± 0.9° were achieved. The as-prepared superhydrophobic Zn–Ni films exhibited the plastron effect, stability against water jet impact, excellent self-cleaning properties, and anti-corrosion performance. It is believed that the superhydrophobic films can expand the application scope of magnesium alloys.

更新日期：2022-12-01

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