Jiang Shuzhen, Guo Zhongning, Liu Guixian, Gyimah Glenn Kwabena, Li Xiaoying, Dong Hanshan
School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China.
School of Metallurgy and Materials, The University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
Materials (Basel). 2017 Oct 25;10(11):1229. doi: 10.3390/ma10111229.
Inspired by some typical plants such as lotus leaves, superhydrophobic surfaces are commonly prepared by a combination of low surface energy materials and hierarchical micro/nano structures. In this work, superhydrophobic surfaces on copper substrates were prepared by a rapid, facile one-step pulse electrodepositing process, with different duty ratios in an electrolyte containing lanthanum chloride (LaCl₃·6H₂O), myristic acid (CH₃(CH₂)COOH), and ethanol. The equivalent electrolytic time was only 10 min. The surface morphology, chemical composition and superhydrophobic property of the pulse electrodeposited surfaces were fully investigated with SEM, EDX, XRD, contact angle meter and time-lapse photographs of water droplets bouncing method. The results show that the as-prepared surfaces have micro/nano dual scale structures mainly consisting of La[CH₃(CH₂)COO]₃ crystals. The maximum water contact angle (WCA) is about 160.9°, and the corresponding sliding angle is about 5°. This method is time-saving and can be easily extended to other conductive materials, having a great potential for future applications.
受荷叶等典型植物的启发，超疏水表面通常由低表面能材料和分级微/纳结构组合制备而成。在本工作中，通过快速、简便的一步脉冲电沉积工艺，在含有氯化镧（LaCl₃·6H₂O）、肉豆蔻酸（CH₃(CH₂)₁₂COOH）和乙醇的电解液中，以不同占空比在铜基底上制备了超疏水表面。等效电解时间仅为10分钟。利用扫描电子显微镜（SEM）、能谱仪（EDX）、X射线衍射仪（XRD）、接触角测量仪以及水滴弹跳法的延时照片，对脉冲电沉积表面的形貌、化学成分和超疏水性能进行了全面研究。结果表明，所制备的表面具有主要由La[CH₃(CH₂)₁₂COO]₃晶体组成的微/纳双尺度结构。最大水接触角（WCA）约为160.9°，相应的滑动角约为5°。该方法省时且可轻松扩展到其他导电材料，具有巨大的未来应用潜力。
