Department of Chemistry, ‡The NanoCarbon Center, §Department of Materials Science and NanoEngineering, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
ACS Appl Mater Interfaces. 2016 Jun 8;8(22):14169-73. doi: 10.1021/acsami.6b03060. Epub 2016 May 26.
Anti-icing and deicing are the two major pathways for suppressing adhesion of ice on surfaces, yet materials with dual capabilities are rare. In this work, we have designed a perfluorododecylated graphene nanoribbon (FDO-GNR) film that takes advantage of both the low polarizability of perfluorinated carbons and the intrinsic conductive nature of graphene nanoribbons. The FDO-GNR films are superhydrophobic with a sheet resistance below 8 kΩ·sq(-1) and then exhibit an anti-icing property that prevents freezing of incoming ice-cold water down to -14 °C. After that point, voltage can be applied to the films to resistively heat and deice the surface. Further a lubricating liquid can be employed to create a slippery surface to improve the film's deicing performance. The FDO-GNR films can be easily switched between the superhydrophobic anti-icing mode and the slippery deicing mode by applying the lubricant. A spray-coating method makes it suitable for large-scale applications. The anti-icing and deicing properties render the FDO-GNR films with promise for use in extreme environments.
防冰和除冰是抑制表面冰附着的两种主要途径，但具有双重功能的材料很少见。在这项工作中，我们设计了一种全氟十二烷基化石墨烯纳米带（FDO-GNR）薄膜，利用全氟碳的低极化率和石墨烯纳米带的固有导电性。FDO-GNR 薄膜具有超疏水性，其面电阻低于 8 kΩ·sq(-1)，然后表现出抗冰性能，可以防止进入的冰水冻结到-14°C。之后，可以施加电压通过电阻加热来除冰表面。进一步地，可以使用润滑剂来产生滑润表面以改善薄膜的除冰性能。通过施加润滑剂，FDO-GNR 薄膜可以很容易地在超疏水抗冰模式和滑润除冰模式之间切换。喷涂方法使其适用于大规模应用。防冰和除冰性能使 FDO-GNR 薄膜有望在极端环境中使用。
