3D mossy structures of zinc filaments: A facile strategy for superamphiphobic surface design.
3D mossy structures of zinc filaments: A facile strategy for superamphiphobic surface design.
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DOI：
10.1016/j.jcis.2018.04.083
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发表时间：
2018-09
影响因子：
9.9
通讯作者：
Shudi Zhi;Gang Wang;Z. Zeng;Lijing Zhu;Zhixiong Liu;Dawei Zhang;Kai Xu;Q. Xue
中科院分区：
文献类型：
--
作者：
Shudi Zhi;Gang Wang;Z. Zeng;Lijing Zhu;Zhixiong Liu;Dawei Zhang;Kai Xu;Q. Xue
超双疏表面具有极强的拒液性，在许多领域都很有吸引力，但其制备工艺效率低且成本高。因此，如何用简单、省时、通用的方法制备超双疏表面仍然是一个挑战。在本研究中，采用电化学沉积的方法在各种金属表面快速构建了苔藓状锌（Zn）细丝，这是一种很有前途的可重入结构。经1H，1H,2H，2H-全氟癸基三氯硅烷（PFDTCS）改性后，Zn@PFDTCS涂层在空气中表现出超疏水性。研究了锌丝形貌与电化学沉积参数的关系。当电流密度为1.78 A ·dm−2，锌的质量分数为0.71 wt%，沉积时间为40 min时，获得了接触角大于154°，滑动角小于5°，对水和十六烷的附着力小于0.043 mN的超双疏表面。利用Zn@PFDTCS二维网格在水中的超亲油性和油下的超疏水性，将其用于收集水中油滴和切割油滴。我们期望在实际应用中，这种简单快速的方法可以指导完美的人工超双疏表面的设计。
The superamphiphobic surfaces with extreme repellency to liquids are very attractive in many fields, but their fabrication processes are always low effective and expensive. So it is still a challenge to create the superamphiphobic surfaces by simple, time saving and universal method. In this work, the mossy zinc (Zn) filaments, a promising re-entrant structure, was rapidly constructed on various metal surfaces by electrochemical deposition approach. After modification by 1H,1H,2H,2H- perfluorodecyltrichlorosilane (PFDTCS), the Zn@PFDTCS coating exhibited superamphiphobicity in air. The correlation between the morphology of Zn filaments and electrochemical deposition parameters has been studied. The superamphiphobic surface with contact angle higher than 154°, sliding angle lower than 5° and adhesive force lower than 0.043 mN to water and hexadecane was obtained, when the current density was 1.78 A ·dm−2, the mass fraction of zinc was 0.71 wt% and the deposition time was 40 min. Furthermore, the Zn@PFDTCS 2D-meshes were used to collect oil droplets under water and cut water droplet in oil due to their superoleophilicity under water and superhydrophobicity under oil. We anticipated that the simple and rapid method guides the design of perfect artificial superamphiphobic surfaces in practical application.