Abstract In this paper, oleophilic and superhydrophobic sponges were successfully constructed via a one-pot low temperature hydrothermal method anchoring three-dimensional rambutan-like-β-NiOOH microspheres into sponge skeletons and lauric acid modification. The constructed modified three-dimensional rambutan-like-β-NiOOH @sponge (the static contact angle of 153.5°) possessed outstanding oil sorption capacity (separation efficiency is nearly 99%) towards the various organics/oils and excellent recyclability after 30 cycles of adsorption-squeezing. Importantly, modified three-dimensional rambutan-like-β-NiOOH @sponge is capable of separating surfactant-stabilized water-in-oil emulsions and can be utilized for continuous oil-water separation with the aid of a peristaltic pump. This is mainly due to the fact that the three-dimensional hierarchical rambutan-like micronano structure formed by self-assembly with high specific surface area provides a large number of hydrophobic interfaces to improve the hydrophobic properties of sponges. This work presents a new strategy for the designs multitasking oil-water separation materials.

中文翻译：

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用于多任务油水分离的超疏水三维红毛丹-β-NiOOH@sponge骨架

摘要 本文通过一锅低温水热法将三维红毛丹状β-NiOOH微球锚定在海绵骨架上并进行月桂酸改性，成功构建了亲油性和超疏水性海绵。所构建的改性三维红毛丹状-β-NiOOH@sponge（静态接触角为153.5°）对各种有机物/油具有出色的吸油能力（分离效率接近99%），30次循环后具有优异的可回收性吸附-挤压。重要的是，改性的三维红毛丹样-β-NiOOH @sponge 能够分离表面活性剂稳定的油包水乳液，并可在蠕动泵的帮助下用于连续油水分离。这主要是由于具有高比表面积的自组装形成的三维分级红毛丹状微纳米结构提供了大量疏水界面，从而提高了海绵的疏水性能。这项工作为设计多任务油水分离材料提供了一种新策略。