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首页> 外文期刊>ACS applied materials & interfaces >Ultrarobust and Biomimetic Hierarchically Macroporous Ceramic Membrane for Oil-Water Separation Templated by Emulsion-Assisted Self-Assembly Method
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Ultrarobust and Biomimetic Hierarchically Macroporous Ceramic Membrane for Oil-Water Separation Templated by Emulsion-Assisted Self-Assembly Method

机译：用于油水分离的Ultrabrobust和仿生层型陶瓷膜通过乳化辅助自组装方法模拟

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摘要

Reported herein is a novel ultrarobust and biomimetic hierarchically macroporous ceramic membrane that can achieve a high efficiency of up to 99.98% for oil-water separation, while the efficiency remains nearly unchanged even after 10 rounds of use and storage for up to 4 months. The macroporous ceramic membrane is prepared by combining surface hydrophobic coating with an emulsion-assisted template self-assembly of the modified Al(2)O(3 )ceramic powder. The as-prepared ceramic membrane is a lightweight material with high strength because the relative density is only similar to 1.02 g/cm(3); the compressive strength of the as-prepared ceramic membrane is expected to be 15-fold higher than that of the sample prepared using the traditional solid template approach even at a higher porosity due to the principle of self-assembly of Al2O3 particles. It is the mechanism of self-assembly that has broken the traditional principle in ceramic preparation that leads to a perfectly dense packing structure. Moreover, the ceramic membrane maintained excellent oil-water separation efficiency, because of which even after its top layer was damaged by sand impingement, superfine particles could be separated using our macroporous membrane due to the featured interconnected pore structure. We anticipate that this example of the combination of a superwettability theory and a traditional ceramic material can provide an important application direction of advanced oil-water separation techniques.
机译：本文报道的是一种新型超脆弱和仿生层级大孔陶瓷膜，可以高达99.98％的油水分离，效率甚至在10轮使用和储存最长4个月后仍然几乎没有变化。通过将表面疏水涂层与改性的Al（2）O（3）陶瓷粉末的乳液辅助模板自组装组合来制备大孔陶瓷膜。制备的陶瓷膜是一种高强度的轻质材料，因为相对密度仅类似于1.02g / cm（3）;由于Al2O3颗粒的自组装原理，预期甚至使用传统的固体模板方法制备的样品的抗压强度比使用传统的固体模板方法制备的样品的压缩强度高。它是自组装的机制，它在陶瓷制剂中破坏了传统原理，导致完全致密的填料结构。此外，陶瓷膜保持优异的油水分离效率，因为即使在其顶层被砂冲击损坏之后，也可以使用我们的大孔膜来分离超细颗粒，由于所需的互联孔结构。我们预计这种超薄地图理论和传统陶瓷材料的组合的例子可以提供先进的油水分离技术的重要应用方向。

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