An Qi, Zhang Yihe, Lv Kaikai, Luan Xinglong, Zhang Qian, Shi Feng
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China.
Nanoscale. 2015 Mar 14;7(10):4553-8. doi: 10.1039/c5nr00026b.
In this paper, we present a facile method for the fabrication of a functionally integrated device, which has the multi-functions of the oil-containment boom, oil-sorption material, and water/oil-separating film, through a single immersion step in an ethanol solution of stearic acid. During the simple immersion process, the two dominant factors of superhydrophobicity, surface roughness and low-surface-energy coatings, could be accomplished simultaneously. The as-prepared functionally integrated device with superhydrophobicity/superoleophilicity displayed a lower density than that of water, such that it could float on water and act as an oil-containment boom; an efficient oil-absorbing property, which was attributed to the capillary effect caused by micrometer-sized pore structures and could be used as oil-sorption materials; a high oil/water separating efficiency which was suitable for water/oil-separating film. In this way, the functions of oil collection, absorption, and water/oil separation are integrated into a single device, and these functions could work independently, reducing the cost in terms of energy consumption and being versatile for a wide range of applications.
在本文中，我们提出了一种简便的方法来制造功能集成装置，该装置通过在硬脂酸乙醇溶液中单次浸泡步骤，具备围油栏、吸油材料和水/油分离膜的多功能。在简单的浸泡过程中，超疏水性的两个主要因素，即表面粗糙度和低表面能涂层，可以同时实现。所制备的具有超疏水性/超亲油性的功能集成装置显示出比水更低的密度，使其能够漂浮在水上并充当围油栏；具有高效的吸油性能，这归因于微米级孔隙结构引起的毛细作用，可作为吸油材料；具有高的油/水分离效率，适用于水/油分离膜。通过这种方式，集油、吸油和水/油分离功能集成到单个装置中，并且这些功能可以独立工作，降低了能源消耗成本，并且适用于广泛的应用。
