A one-step method to fabricate lotus leaves-like ZnO film

作者：Wu Jun; Xia Jun^*; Lei Wei; Wang Bao ping

来源：Materials Letters, 2011, 65(3): 477-479.

DOI：10.1016/j.matlet.2010.10.029

• Superhydrophobic
• Superhydrophilic
• ZnO

Superhydrophobic surface is commonly fabricated by a combination of micro- and nano-scale structure and low surface energy materials. In this paper we fabricated a lotus leaves-like ZnO nano-forest surface by alkaline hydrothermal method, and the formation of micro- and nano-scale structured surface is controlled by the growth of the ZnO nanoseed layer. The growing ZnO nano-forest exhibits a perfect superhydrophilicity with a low water droplet CA about 1 degrees. After modification with Teflon AF, the surface exhibits a superhyclrophobicity with a water CA above 170 degrees. The method is simply controllable, cost-effective, and has a wide range of potential applications such as self-cleaning superhydrophobic coating on large areas of different substrates.

• 出版日期2011-2-15
• 单位东南大学