Candle Soot as a Template for a Transparent Robust Superamphiphobic Coating
Candle Soot as a Template for a Transparent Robust Superamphiphobic Coating
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DOI：
10.1126/science.1207115
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发表时间：
2012-01-06
期刊：
影响因子：
56.9
通讯作者：
Vollmer, Doris
中科院分区：
文献类型：
--
作者：
Deng, Xu;Mammen, Lena;Vollmer, Doris
涂层是调整材料表面性能的重要步骤。基于低能量表面和纳米和微米尺度上的粗糙度，已经开发出对水具有大于150度的接触角和小于10度的滚降角的超疏水涂层。然而，这些表面仍然被有机液体如基于表面活性剂的溶液、醇或烷烃润湿。同时具有超疏水性和超疏油性的涂层是罕见的。我们设计了一种易于制造的，透明的，和油反弹的超双疏涂层。蜡烛烟灰的多孔存款被涂上25纳米厚的二氧化硅壳。黑色涂层在600 ℃煅烧后变得透明。硅烷化后，涂层是超双疏性的，即使在其顶层被砂冲击损坏后仍然如此。
Coating is an essential step in adjusting the surface properties of materials. Superhydrophobic coatings with contact angles greater than 150 degrees and roll-off angles below 10 degrees for water have been developed, based on low-energy surfaces and roughness on the nano-and micrometer scales. However, these surfaces are still wetted by organic liquids such as surfactant-based solutions, alcohols, or alkanes. Coatings that are simultaneously superhydrophobic and superoleophobic are rare. We designed an easily fabricated, transparent, and oil-rebounding superamphiphobic coating. A porous deposit of candle soot was coated with a 25-nanometer-thick silica shell. The black coating became transparent after calcination at 600 degrees C. After silanization, the coating was superamphiphobic and remained so even after its top layer was damaged by sand impingement.